Find the critical points of the given function.
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5. Graphical Applications of Derivatives
Finding Global Extrema
객관식
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)
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검증된 단계별 안내1
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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