Table of contents

0. Functions7h 52m
1. Limits and Continuity2h 2m
2. Intro to Derivatives1h 33m
3. Techniques of Differentiation3h 18m
4. Applications of Derivatives2h 38m
5. Graphical Applications of Derivatives6h 2m
6. Derivatives of Inverse, Exponential, & Logarithmic Functions2h 37m
7. Antiderivatives & Indefinite Integrals1h 26m
8. Definite Integrals4h 44m
9. Graphical Applications of Integrals2h 27m
- Area Between Curves
  1h 18m
- Introduction to Volume & Disk Method
  1h 8m
10. Physics Applications of Integrals 3h 16m
- Kinematics
  1h 13m
- Work
  2h 3m
11. Integrals of Inverse, Exponential, & Logarithmic Functions2h 34m
12. Techniques of Integration7h 39m
13. Intro to Differential Equations2h 55m
14. Sequences & Series5h 36m
15. Power Series2h 19m
- Introduction to Power Series
  1h 9m
- Taylor Series & Taylor Polynomials
  1h 10m
16. Parametric Equations & Polar Coordinates7h 58m

4. Applications of Derivatives

Implicit Differentiation

Calculus

4. Applications of Derivatives

Implicit Differentiation

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2:11 minutes

Problem 3.8.5

Textbook Question

5–8. Calculate dy/dx using implicit differentiation.
x = y²

Verified step by step guidance

Start by understanding the concept of implicit differentiation. This technique is used when you have an equation involving both x and y, and you want to find the derivative of y with respect to x without solving for y explicitly.

Given the equation x = y², differentiate both sides with respect to x. Remember that y is a function of x, so when differentiating y², you need to apply the chain rule.

Differentiate the left side of the equation: The derivative of x with respect to x is 1.

Differentiate the right side of the equation: The derivative of y² with respect to x is 2y(dy/dx), using the chain rule. Here, you differentiate y² with respect to y, which gives 2y, and then multiply by dy/dx because y is a function of x.

Set the derivatives equal to each other: 1 = 2y(dy/dx). Solve for dy/dx by isolating it on one side of the equation. This involves dividing both sides by 2y.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Implicit Differentiation

Implicit differentiation is a technique used to find the derivative of a function when it is not explicitly solved for one variable in terms of another. Instead of isolating y, we differentiate both sides of the equation with respect to x, applying the chain rule when necessary. This method is particularly useful for equations where y cannot be easily expressed as a function of x.

Chain Rule

The chain rule is a fundamental principle in calculus that allows us to differentiate composite functions. It states that if a function y is defined as a function of u, which in turn is a function of x, then the derivative of y with respect to x can be found by multiplying the derivative of y with respect to u by the derivative of u with respect to x. This is essential in implicit differentiation when dealing with terms involving y.

Derivative Notation

Derivative notation, such as dy/dx, represents the rate of change of y with respect to x. In the context of implicit differentiation, it indicates that y is a function of x, even if it is not explicitly defined. Understanding this notation is crucial for correctly applying differentiation techniques and interpreting the results in the context of the problem.

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5–8. Calculate dy/dx using implicit differentiation.x = y²

Key Concepts

Implicit Differentiation

Chain Rule

Derivative Notation

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5–8. Calculate dy/dx using implicit differentiation.
x = y²