Find the critical points of the given 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
Finding Global Extrema
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Find the global maximum and minimum values of the function on the given interval. State as ordered pairs.
y=8+27x−x3;[0,4]
A
Global maximum at (3,62), Global minimum at (0,8)
B
Global maximum at (3,62), Global minimum at (4,52)
C
Global maximum at (−3,−46), Global minimum at (0,8)
D
Global maximum at (4,52), Global minimum at (−3,−46)

1
First, identify the function and the interval: The function is y = 8 + 27x - x^3 and the interval is [0, 4].
To find the critical points, take the derivative of the function with respect to x. The derivative is y' = 27 - 3x^2.
Set the derivative equal to zero to find the critical points: 27 - 3x^2 = 0. Solve for x to find the values where the slope of the tangent is zero.
Evaluate the function y = 8 + 27x - x^3 at the critical points found in the previous step, as well as at the endpoints of the interval, x = 0 and x = 4.
Compare the values of the function at these points to determine the global maximum and minimum values within the interval [0, 4]. The ordered pairs will represent these values.
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Finding Global Extrema practice set
