Which of the following could be a turning point for the continuous function ?
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 3h 16m
- 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
- 16. Parametric Equations & Polar Coordinates7h 58m
5. Graphical Applications of Derivatives
Intro to Extrema
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Consider the graph of below. How many local maxima does have?
A
The number of times changes from negative to positive
B
The number of times changes from positive to negative
C
The number of points where is zero
D
The number of times crosses the -axis

1
Step 1: Understand the relationship between f'(x) and f(x). The derivative f'(x) represents the slope of the graph of f(x). A local maximum of f(x) occurs when f'(x) changes from positive to negative.
Step 2: Analyze the graph of f'(x). Look for points where f'(x) crosses the x-axis, as these are the points where f'(x) equals zero. These points are critical points of f(x).
Step 3: Determine the behavior of f'(x) around each critical point. Specifically, check whether f'(x) transitions from positive to negative at these points. This transition indicates a local maximum of f(x).
Step 4: Count the number of times f'(x) changes from positive to negative. Each such change corresponds to a local maximum of f(x).
Step 5: Verify your observations by ensuring that f'(x) does not change from negative to positive at the same points, as this would indicate a local minimum instead of a maximum.
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