Turunan fungsi aljabar

Matematika Hebat
22 Mar 202116:31

Summary

TLDRThis video script offers an in-depth tutorial on the concept of derivatives in mathematics. It walks through several examples to illustrate the process of finding derivatives of functions, including powers, roots, and composite functions. The script covers basic differentiation rules, such as the power rule and chain rule, and simplifies complex expressions step by step. The tutorial aims to clarify the differentiation process, making it accessible for students and learners interested in calculus.

Takeaways

  • πŸ“š The video is an educational tutorial focused on the concept of derivatives in mathematics.
  • πŸ‘ The host encourages viewers to like, subscribe, and comment for a beneficial and constructive learning experience.
  • πŸ”’ The first example problem explains that the derivative of a constant number is zero, emphasizing the basic rule of differentiation.
  • πŸ“ˆ In the second example, the derivative of x raised to the power of 9 is calculated, demonstrating the power rule of differentiation.
  • πŸ“‰ The third example involves finding the derivative of 3x to the power of 4, illustrating the process of applying the power rule to a term with a coefficient.
  • πŸ€” The fourth example problem deals with the derivative of a function involving a square root, requiring a transformation into a power function before differentiation.
  • πŸ“š The fifth example problem involves a polynomial function, showing how to find the derivative by applying the power rule to each term individually.
  • πŸ” The sixth example is a more complex function, requiring the use of the quotient rule and simplification of the resulting expression.
  • πŸ“ The seventh example introduces the concept of finding the derivative of a function with both addition and subtraction, using the derivative of each part separately.
  • 🌟 The eighth and final example problem involves a function with a radical, showcasing the process of converting it into a power function for differentiation.
  • πŸ”— The video concludes with an apology for any shortcomings and a sign-off with well-wishes, inviting viewers to check out other materials for further understanding of the chain rule.

Q & A

  • What is the main topic discussed in the video?

    -The main topic discussed in the video is the concept of derivatives in calculus, specifically focusing on the differentiation of various functions.

  • What is the derivative of a constant number?

    -The derivative of a constant number is zero, as explained in the first example of the script.

  • How do you find the derivative of a function in the form of x^n?

    -To find the derivative of a function in the form of x^n, you multiply the exponent n by the coefficient and reduce the exponent by one, as demonstrated in the second example with the function f(x) = x^9.

  • What is the derivative of the function f(x) = 3x^4?

    -The derivative of the function f(x) = 3x^4 is 12x^3, as shown in the third example of the script.

  • How is the derivative of a function involving a square root handled?

    -The derivative of a function involving a square root is found by converting the square root into a fractional exponent, then applying the power rule, as explained in the fourth example with the function f(x) involving the square root of x.

  • What is the derivative of the function f(x) = 7x^2 - 10x + 6?

    -The derivative of the function f(x) = 7x^2 - 10x + 6 is 14x - 10, as shown in the fifth example of the script.

  • How do you differentiate a function that is a sum of multiple terms?

    -To differentiate a function that is a sum of multiple terms, you differentiate each term separately and then combine the results, as demonstrated in the sixth example with the function f(x) = x^5 + 2x^2 + 6x - 1.

  • What is the derivative of a function with a term in the form of (a * x + b) / c?

    -The derivative of a function with a term in the form of (a * x + b) / c involves differentiating each component separately and then combining them, as shown in the seventh example with the function f(x) = 2x - 4 / (x + 1).

  • How do you find the derivative of a function involving a fifth root?

    -To find the derivative of a function involving a fifth root, you first convert the root into a fractional exponent, then apply the power rule, as explained in the eighth example with the function involving the fifth root of 2x^2 + x - 6.

  • What is the chain rule in calculus, and how is it used in the script?

    -The chain rule is a method in calculus for differentiating composite functions. It is used in the script to differentiate functions that are composed of multiple parts, as shown in the examples where the function is broken down into components before differentiation.

Outlines

00:00

πŸ“š Introduction to Derivatives in Mathematics

The video script begins with a greeting and an introduction to the topic of derivatives in mathematics. The speaker emphasizes the importance of liking, subscribing, and commenting on the channel for mutual benefit. The script then dives into solving the first example problem, which involves finding the derivative of a constant function, highlighting that the derivative of any constant is zero. The explanation proceeds with the method to find the derivative of a function like x^9, demonstrating the process step by step, including writing the power in front and then multiplying it by the base to the power of one less than the original.

05:01

πŸ” Derivative Calculations for Polynomial Functions

This paragraph focuses on the process of finding derivatives for polynomial functions. The script explains how to calculate the derivative of a function like 3x^4, detailing the steps of writing the power in front, multiplying by the coefficient, and then reducing the exponent by one. The explanation is clear and methodical, providing a step-by-step guide to understanding the derivative of polynomial expressions, including the application of the power rule for derivatives.

10:02

🌟 Advanced Derivative Concepts with Roots and Exponents

The script introduces more complex derivative problems involving roots and fractional exponents. It explains the process of converting a root expression into a power form, such as changing the square root of x to x^(1/2), and then finding its derivative. The explanation includes the application of the chain rule and the power rule, demonstrating the calculation of derivatives for functions with roots and fractional exponents, such as the derivative of -4 times the cube root of x squared.

15:02

πŸ“˜ Derivatives of Composite Functions and Quadratics

This section of the script deals with the derivatives of composite functions and quadratic expressions. The speaker explains how to approach finding the derivative of a function like 7x squared minus 10x plus 6, breaking down the process into finding the derivative of each term individually and then combining them. The explanation includes the use of the power rule and the constant rule, providing a clear method for differentiating composite functions.

πŸ“š Derivative Calculations for Sum and Difference of Functions

The script moves on to the calculation of derivatives for functions that are the sum or difference of other functions. It illustrates the process of finding the derivative of a function like x^5 plus 2 times x squared plus 6x minus 1. The explanation involves setting up the function in terms of U and V, finding the derivative of each part, and then combining them according to the derivative rules, resulting in a comprehensive derivative expression.

πŸ”’ Derivative of a Linear Function with a Constant

This paragraph discusses the derivative of a linear function with an additional constant, such as 2x minus 4 times x plus 1. The script explains the process of finding the derivative by treating the function as a combination of two parts, U and V, and then applying the derivative rules to each part. The explanation is detailed, showing the application of the derivative rules to linear functions and the combination of constants.

🌐 Derivatives Involving Fifth Roots and Quadratics

The script introduces the concept of finding derivatives for functions involving fifth roots and quadratic expressions, such as the fifth root of 2 times x squared plus x minus 6 squared. It explains the initial step of converting the root into a power form and then finding the derivative of the resulting expression. The explanation includes the application of the chain rule and the power rule, leading to the final derivative expression.

πŸ“˜ Conclusion and Further Learning on Derivatives

The final paragraph of the script concludes the tutorial on derivatives with a brief mention of a problem involving the derivative of a function with a root and a quadratic term. It suggests that for those who are not familiar with the chain rule, they should refer to a provided link for more information. The script ends with a closing greeting and an apology for any shortcomings, emphasizing the hope that the tutorial has been beneficial.

Mindmap

Keywords

πŸ’‘Derivative

A derivative in calculus represents the rate at which a function changes with respect to its variable. It is a fundamental concept in the video, as the script discusses finding the derivative of various functions. For example, when the script mentions 'turunan', which translates to 'derivative', it is referring to the process of finding the derivative of functions like 'fx = 8' or 'fx = x^9'.

πŸ’‘Function

A function in mathematics is a relation between a set of inputs and a set of permissible outputs with the property that each input is related to exactly one output. The script frequently refers to 'fx', which denotes a function of x, and the process of finding its derivative is central to the video's educational content.

πŸ’‘Power Rule

The power rule is a basic principle in calculus for finding the derivative of a function that involves a variable raised to a power. It states that the derivative of x^n, where n is a constant, is n*x^(n-1). The script applies this rule when discussing the derivatives of functions like 'fx = x^9' and 'fx = 3x^4'.

πŸ’‘Chain Rule

The chain rule is a method in calculus for differentiating composite functions. It is used when a function is made up of two or more functions operating in sequence. The script hints at using the chain rule for more complex functions, such as 'fx = (2x^2 + x - 6)^(5/3)', where the rule is essential for finding the derivative.

πŸ’‘Composite Function

A composite function is a function that is made by combining two or more functions. In the script, the term is implied when discussing the derivative of functions that have an outer function operating on an inner function, such as in the example 'fx = (2x^2 + x - 6)^(5/3)'.

πŸ’‘Algebra

Algebra is a branch of mathematics concerning the study of mathematical symbols and the rules for manipulating these symbols. It is foundational to calculus, as seen in the script when simplifying expressions and solving for derivatives, which involves algebraic manipulation.

πŸ’‘Variable

In mathematics, a variable represents a quantity that can change and is often used in functions to denote different values. The script consistently uses the variable 'x' in functions to illustrate the process of differentiation.

πŸ’‘Simplification

Simplification in mathematics refers to the process of making a complex expression easier to understand or work with. The script discusses simplifying the results of derivatives, such as combining like terms or reducing fractions, to arrive at the final answer.

πŸ’‘Example Problem

An example problem is a specific instance of a mathematical problem used to illustrate a concept or method. The script presents several 'contoh soal', or example problems, to demonstrate the process of finding derivatives for different types of functions.

πŸ’‘Quadratic Function

A quadratic function is a polynomial function of degree two. Its general form is f(x) = ax^2 + bx + c. The script mentions quadratic functions, such as '7x^2', when discussing how to find their derivatives, which involves applying the power rule.

πŸ’‘Root Function

A root function, or radical function, involves variables raised to fractional powers. The script discusses the derivative of functions involving roots, such as '√x' or 'x^(3/2)', which requires converting the root to a power and then differentiating.

Highlights

Introduction to the topic of derivatives of functions in the video.

Emphasis on liking, subscribing, and commenting for the benefit of the channel.

Explanation that the derivative of a constant number is zero.

Demonstration of finding the derivative of x^9 using the power rule.

Clarification on the process of taking derivatives of functions with multiple terms.

Example of finding the derivative of a function with a term involving a square root.

Conversion of a square root to a fractional exponent for derivative calculation.

Explanation of the derivative of a function involving a cube root and its simplification.

Approach to finding the derivative of a function with multiple terms and constants.

Step-by-step solution for the derivative of a function with quadratic and linear terms.

Introduction of a function with multiple terms and constants for derivative practice.

Method for finding the derivative of a function with a term raised to a fractional power.

Explanation of the chain rule for derivatives in the context of composite functions.

Solution for a derivative problem involving a function with a square root and a quadratic term.

Final example of finding the derivative of a function with a cube root and a linear term.

Discussion on the common mistake of not applying the chain rule correctly.

Conclusion of the video with a reminder to check the description for more information on derivatives.

Closing of the video with traditional greetings.

Transcripts

play00:00

Oke Assalamualaikum warahmatullahi

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wabarakatuh ketemu lagi dengan channel

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kami matematika hebat nah di video kita

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kali ini kami akan mencoba membahas

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materi yaitu tentang turunan fungsi

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aljabar kamu sebelum kita lanjut jangan

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lupa like subscribe comment dan

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subscribe kami semoga bedanya bermanfaat

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dan mudah-mudahan bisa menjadi amal

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jariyah untuk kami nantinya dan sekarang

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langsung saja kita bahas contoh soalnya

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soal yang pertama diberikan fungsi fx =

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8 Tentukan F aksen X namun perlu diingat

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untuk turunan dari sebuah angka baik

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akan 8-10 100001 juta dan seterusnya dia

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jelas bentuk turunan dari sebuah angka

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itu hasilnya adalah nol

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Launcher lanjut soal yang kedua

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diberikan fungsi fx = x ^ 9 Tentukan F

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aksen x nya latihan turunan dari x ^ 9

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caranya batikan ^ disini ^ 9 maka

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terlebih dahulu kita tulis pangkatnya

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disini paling depan

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baru-baru setelah itu dikalikan dengan x

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^ 9 dikurang satu nah kalau untuk

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turunan pangkat dari setiap variabelnya

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selalu di kurang 19 ia selalu dikurang

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satu ini rumus dari turunan

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Hai = 9 x ^ 9 kurang satu hasilnya x

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pangkat 8 dan ini dia bentuk jawaban

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dari contoh soal yang kedua lanjut ke

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jodoh soalnya ketiga diberikan fungsi fx

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= 3 X ^ 4 Tentukan F aksen x nya ketikan

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pangkatnya terlebih dahulu pangkat-4

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kita tulis paling depan di sini 4 baru

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Setelah itu kita kalikan dengan tangkai

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depan Sini MP3 saya itu dikalikan dengan

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x ^ 4 dikurang satu ^ prabayani dikurang

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1 = 4 dikali tiga hasilnya 12 lalu x ^ 4

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kurang satu hasilnya x ^ 3 Ini dia

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bentuk jawaban dari contoh soal yang

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ketiga lanjut Sekarang kita akan

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membahas soal yang keempat diberikan

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fungsi fx = negatif 4 dikali akar x

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pangkat 3 nah ketukan turunannya atau F

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aksen x nya kalau ada adik satu rekan

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ketemu contoh soal turunan yang ada

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bentuk akarnya langkah awal atau

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terlebih dahulu kita hilangkan tanda

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akarnya rubah dia menjadi bentuk

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bilangan berpangkat Maka kalau kita

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rubah bentuk negatif 4 dikali akar x

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pangkat ini maka tiga ini kita rubah

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jadi bentuk bilangan berpangkat jadinya

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itu negatif 4 nah akar x pangkat 3 di

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sini sekarang jadinya itu X ^ 3/2 kalau

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misalnya n sini dia ^ 1/3 ditulis

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pangkatnya disini tidak ada tangkapnya

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maka perubahan kalau ada akarnya disini

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itu jadinya xpangkat satu per

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Va Nah setelah kita merubahnya menjadi

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bentuk bilangan berpangkat baru kita

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bisa mencari turunannya racikan

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pangkatnya disini ^ 3/2 terlebih dahulu

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kita tulis pakainya paling depan 3/2

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baru setelah itu dikalikan dengan

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negatif 4 lalu dikalikan dengan X ^ 3/2

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dikurang satu ingat kalau untuk turunan

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^ tiap parabolanya selalu di pulang satu

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ini dikurang satu ide bersatu yang tadi

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juga dikurang 1 = 3 dikali negatif

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tampan hasilnya negatif 12 lalu dibagi

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dua hasilnya negatif 6 dan X ^ 3/2

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dikurang satu itu hasilnya adalah x ^

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1/2 sebenarnya kalau essay soalnya saya

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sampai di sini jawaban kita sudah benar

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Hai kebetulan ini soal yang diberikan

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dia pilihan ganda dan bentuk jawaban

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yang ada itu adalah negatif 6 dan ^ 1/2

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ini Itu boleh juga kita tulis menjadi

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bentuk akar x dimana bentuk lain dari X

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^ 1/2 itu = akar Nah ini dia betul

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jawaban dari contoh soal kita yang

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keempat sudah bukan sangat mudah sekali

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tentunya lanjut Sekarang kita akan

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membahas soal yang kelima diberikan

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fungsi fx = 7 x kuadrat dikurang 10 x

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ditambah enam Tentukan F aksen X

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Hai Nah kalau ada adik atau rekan ketemu

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contoh soal turunan atau diferensial

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seperti ini maka cara menyelesaikannya

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kita cari satu persatu kita cari depan

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lebih ya Tengah terakhir yang paling

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belakang turunan dari 7 x kuadrat disini

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dia pangkat dua kita tulis angka 2nya

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paling depan baru setelah itu dikalikan

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dengan angka 7 dan x nya disini x

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pangkat 2 ia dikurang satu dikurang

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turunan dari 10x itu adalah 10 ditambah

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turunan dari sebuah angka itu adalah 0 =

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2 kali 7 hasilnya 14 lalu x pangkat dua

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kurang satu hasilnya X ^ 1/2 juga kita

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tulis X saja terakhir dikurang 10 nah

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ini dia bentuk jawaban dari contoh soal

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yang kelima

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Hai lanjut kita masuk dari soal yang

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keenam diberikan fungsi fx = x ^ 5

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ditambah dua dikali x ^ 2 + 6 x kurang 1

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kalau ada adik atau pergerakan ketemu

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contoh soal turunan seperti ini maka

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langkah awal yang harus kita lakukan

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kita misalkan kita pindahkan angka yang

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paling depan di sini yang paling depan

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itu sebagai UU Oke ^ 5 Plus 2 kita

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misalkan sebagai u&i angka yang belakang

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sini kita misalkan sebagai

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Hai langkah selanjutnya kita cari

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turunan dari tiap masing-masing sini

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turunan dari UU yaitu ku aksen apa

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turunan dari x ^ 5 Plus 2 itu turunan

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dari x ^ 5 Plus 2 adalah 5x ^ 4 dan

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turunan dari V yaitu V aksen turunan

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dari X kuadrat ditambah 6x kurang satu

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Apa bentuk turunannya yaitu hasilnya

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adalah 2x ditambah enam Nah setelah ini

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setelah kita misalkan tadi yang depan

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sebagai uang belakang sebagai p maka

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setelah ini baru kita masuk ke humus

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Inti atau rumus dari f aksen x nya

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gimana rumusnya kalau bentuk muka live

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itu rumusnya adalah Fuad senpi ditambah

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Kube absen UASnya tadi sudah kita cari

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kita peroleh hasilnya 5x ^ 4 dan v-nya

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juga sudah ada tadi ya

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x kuadrat ditambah 6x kurang satu lalu

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ditambah uu-nya x ^ 5 Plus 2 dan b

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absennya itu tadi fa-2x ditambah enam

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lanjut sama dengan sekarang kita kalikan

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angka 5x ^ penting kita kalian satu-satu

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ke dalam 5x ^ 4 dikali x pangkat 2 itu

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hasilnya 5X ^ 6 lalu 5x ^ 4 dikali

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positif 6x hasilnya positif 30 x ^ 5

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lalu 5x ^ 4 dikali negatif satu hasilnya

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negatif 5x ^ 4 lalu ditambah ketika / x

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^ 5 dikali 2x hasilnya 2xpangkat 6yj x ^

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5 dikali positif 6 hasilnya positif 6x ^

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1500

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Hai lanjut lagi angka2 lagi dua dikali

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dua eks hasilnya positif 4x terakhir

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positif 2 dikali positif 6 hasilnya

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positif 12 setelah ini akan kita

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Sederhanakan jawabannya perhatikan kita

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kelompokkan yang sejenis yang ^

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variabelnya sama x pangkat 6 sama = x ^

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6 5X ^ 6 ditambah 2xpangkat 6 hasilnya

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7x ^ 6 beli pakan dimarahin 30 x ^ 5

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ditambah 6x ^ 5 hasilnya positif 36 x ^

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5 lalu dikurang 5 x ^ 4 ditambah 4x

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berakhir ditambah 12 Nah ini dia bentuk

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jawaban dari contoh soal kita yang

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keenam sangat mudah spray tentunya

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lanjut Sekarang kita akan membahas soal

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yang ketujuh diberikan fungsi f

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x = 2 x kurang 4 per x + 1 Nah kalau ada

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ding atau porekan ketemu contoh soal

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turunan atau diferensial seperti ini

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langkah awal yang harus kalian lakukan

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kalian misalkan untuk bagian atas kita

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misalkan sebagai ungu dan untuk bagian

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bawah kita misalkan sebagai

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Hai lanjut kita cari turunan dari UU dan

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fight turunan dari UU yaitu uadc apa

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turunan dari dua x kurang empat yaitu

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turunannya adalah dua lalu kita cari

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lagi turunan V turunan V yaitu V aksen

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turunan dari x + 1 yaitu adalah

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Hai lanjut rumus untuk F aksen x nya

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kalau kalian ketemu bentuk fungsi

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efeknya yaitu suhu Ph tadi kan sudah

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kita bisa tanya di atas usia dibawah V

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maka Bentuknya itu perfect maka rumus

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turunannya yaitu uang senpi di kura up

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absen perfect kuadrat = UASnya tadi

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yaitu dua lalu diprediksi xplus satu

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dengan nilai pi tadi itu adalah x + 1

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lalu dikurang Who nilai UT di 2 x kurang

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4 lalu dikalikan dengan v aksen B aksen

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yaitu satu lalu per P kuadrat Tenyata di

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X + 1 lalu dikuadratkan = kita kalikan

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angka 2 ini satu-satu kedalam dua kali x

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hasilnya 2x lalu dua kali positif satu

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hasilnya positif

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21 dikali 2x hasilnya 2x lalu dikalikan

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dengan tanah negatif hasilnya negatif 2

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x + 1 dikali negatif 4 hasilnya negatif

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4 lalu dikalikan dengan tanda negatif

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hasilnya positif 4x + 1 dikuadratkan

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terakhir kita Sederhanakan 2x dikurang

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2m habis ya tinggal dua tambah 4

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hasilnya 6 peti bawahnya x + 1 kuadrat

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Nah ini dia jawaban untuk contoh soal

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kita yang ketujuh terakhir biar kalian

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bener-bener punk sekarang kita masuk ke

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contoh soalnya ke-8 itu soalnya bentuk

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akar diberikan fungsi fx yaitu akar5 dan

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akar pangkat 5 dari 2 x kuadrat ditambah

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X kurang 6 pangkat 2 Tentukan F aksesnya

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untuk

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yang alfinet seperti ini terlebih dahulu

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kita rubah ia sekali lagi kalau ada soal

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turunan bentuk akan maka langkah pertama

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yang harus kalian lakukan rubah menjadi

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bentuk bilangan berpangkat

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Hai Maka kalau kita rubah menjadi

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bilangan berpangkat sekarang jadinya itu

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2x ^ 2 + x kurang 6 nah jadinya 125

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setelah kita rubah menjadi bentuk

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bilangan berpangkat baru kita bisa

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mencari turunannya atau absen esnya

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Bagaimana caranya mudah sekali kalau

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yang seperti ini cerita turunan yang di

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dalam kurung terlebih dahulu turunan

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dari 2 x kuadrat tambah X kurang 6 itu

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hasilnya adalah 4x ditambah satu ini

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merupakan hasil turunan dari yang di

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dalam kurung atas ini baru sekarang

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perhatikan pangkatnya 2/5 kita tulis

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disini lalu bagian dalam kurungnya tetap

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2x ^ 2 + x kurang nah namun pangkatnya

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disini dikurang

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Hai lanjut sama dengan dua perlima kita

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pindahkan paling depan lalu baru setelah

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itu 4 x + 1 level 2 x kuadrat tambah X

play14:00

kurang 6 ^ 2/5 kurang satu Berapa hasil

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dari 25 kurang satu itu hasilnya adalah

play14:08

negatif 3/5 Nah kalau seandainya soalnya

play14:15

essay sampai di sini jawaban kita sudah

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benar nama kebetulan ini merupakan soal

play14:22

kiriman dari salah satu furqani ternyata

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tidak ada dalam pilihan gandanya maka

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bentuk lain dari jawaban ini ketika

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kalau saya boleh sampai di sini

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kebetulan tidak ada jawabannya maka

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bentuk lainnya pastikan cara merubahnya

play14:40

= 2 dikalikan dengan 4x + 1H

play14:47

Hai par dibawahnya delima oke di sini

play14:52

lalu perhatikan 2 x kuadrat tambah X

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kurang 6 pangkat positif 3/5 teriakan

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pangkat negatif kalau kita pindahkan ke

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bawah jadinya pangkat positif

play15:05

Hai lanjut sama dengan kritikan dua kita

play15:10

kalian ke dalam dua kali 4x hasilnya 8E

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Lalu 2 dikali positif satu hasilnya

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positif 2 bab dibawahnya yaitu 502s

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kuadrat tambah X kurang 6 pangkat tiga

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perlima sama hanya kita berubah dari

play15:29

bentuk soal yang pertama tadi oke dari

play15:32

bentuk akar menjadi bentuk bilangan

play15:34

berpangkat Nah sekarang kebalikannya

play15:35

dari bentuk bilangan berpangkat menjadi

play15:39

bentuk akar Oke perhatikan dua ya di

play15:42

sini limanya disini maka perhatikan tiga

play15:46

nya tetap disini limanya pindah ke depan

play15:50

sini Nah inilah Dia bentuk jawaban dari

play15:53

contoh soal yang nomor 8 nah soal nomor

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8 ini ini sering dijawab dengan

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menggunakan aturan berantai oke

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sebagai ada adik atau kedudukan yang

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belum paham dengan aturan berantai

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silakan kalian cek di deskripsi di

play16:11

cerita kali ini itu ada salah satu link

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materi tentang turunan pakai aturan

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berantai demikian tutorial singkat kami

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semoga videonya bermanfaat Lebih dan

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kurang kami mohon maaf kami tutup dengan

play16:25

Assalamualaikum warahmatullahi

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wabarakatuh Bu

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