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 Integrals4h 44m
- 9. Graphical Applications of Integrals2h 27m
- 10. Physics Applications of Integrals 2h 22m
5. Graphical Applications of Derivatives
Concavity
Problem 107c
Textbook Question
The graph of f' on the interval [-3,2] is shown in the figure. <IMAGE>
c. At what point(s) does f have an inflection point?

1
Understand that an inflection point occurs where the second derivative changes sign, indicating a change in concavity of the function f.
Since the graph of f' is provided, we need to analyze the behavior of f' to infer information about f''.
Identify where f' has local extrema (maximum or minimum points) on the interval [-3, 2]. These points are where f'' changes sign.
Look for points on the graph of f' where it changes from increasing to decreasing or vice versa. These are potential inflection points for f.
Verify that at these points, the sign of f'' changes by considering the slope of f' before and after these points.

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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
First Derivative and Critical Points
The first derivative of a function, denoted as f', indicates the rate of change of the function f. Critical points occur where f' is zero or undefined, which can signify local maxima, minima, or points of inflection. Understanding these points is essential for analyzing the behavior of the function and determining where it changes direction.
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Critical Points
Second Derivative and Inflection Points
An inflection point occurs where the concavity of the function changes, which is determined by the second derivative, f''. If f'' changes sign at a point, it indicates a transition in concavity, suggesting that the function f has an inflection point there. Identifying these points is crucial for understanding the overall shape of the graph.
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The Second Derivative Test: Finding Local Extrema
Graphical Interpretation of Derivatives
The graph of the first derivative f' provides valuable insights into the behavior of the original function f. By analyzing where f' is positive or negative, one can infer where f is increasing or decreasing. Additionally, the points where f' crosses the x-axis indicate potential critical points, which are essential for locating inflection points in the context of the original function.
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Graphical Applications of Exponential & Logarithmic Derivatives: Example 8
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