Table of contents
- 0. Functions7h 52m
- Introduction to Functions16m
- Piecewise Functions10m
- Properties of Functions9m
- Common Functions1h 8m
- Transformations5m
- Combining Functions27m
- Exponent rules32m
- Exponential Functions28m
- Logarithmic Functions24m
- Properties of Logarithms34m
- Exponential & Logarithmic Equations35m
- Introduction to Trigonometric Functions38m
- Graphs of Trigonometric Functions44m
- Trigonometric Identities47m
- Inverse Trigonometric Functions48m
- 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 Integrals3h 25m
3. Techniques of Differentiation
Basic Rules of Differentiation
Problem 3.91c
Textbook Question
Derivatives from a graph If possible, evaluate the following derivatives using the graphs of f and f'. <IMAGE>
c. (f^-1)'(f(2))

1
To solve this problem, we need to use the formula for the derivative of the inverse function. The formula is: (f^{-1})'(x) = 1 / f'(f^{-1}(x)).
First, identify f(2) from the graph of f. This value is the input for the inverse function f^{-1}.
Next, find the value of f^{-1}(f(2)) using the graph of f. This is the x-value for which f(x) equals f(2).
Once you have f^{-1}(f(2)), use the graph of f' to find f'(f^{-1}(f(2))). This is the derivative of f at the point f^{-1}(f(2)).
Finally, apply the formula: (f^{-1})'(f(2)) = 1 / f'(f^{-1}(f(2))). This will give you the derivative of the inverse function at the point f(2).

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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Inverse Function Theorem
The Inverse Function Theorem states that if a function f is continuous and differentiable, and its derivative f' is non-zero at a point, then the inverse function f^-1 exists locally around that point. This theorem is crucial for understanding how to differentiate inverse functions and relates the derivatives of f and f^-1.
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Chain Rule
The Chain Rule is a fundamental principle in calculus that allows us to differentiate composite functions. It states that if you have a function g(f(x)), the derivative is g'(f(x)) * f'(x). This rule is essential when dealing with derivatives of inverse functions, as it helps in relating the derivatives of f and its inverse.
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Evaluating Derivatives at Specific Points
To evaluate derivatives at specific points, one must first find the value of the function at that point and then apply the appropriate derivative rules. In the context of the question, evaluating (f^-1)'(f(2)) requires finding f(2) and then using the Inverse Function Theorem to determine the derivative of the inverse function at that point.
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