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Find the absolute maximum for the function ( f(x) = x^2 e^{-x} ), (x in [-1,3]).

A. -1
B. 0
C. 1
D. 3
E. There is no absolute maximum.

User Fbuchinger
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1 Answer

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Final answer:

To find the absolute maximum for the function f(x) = x^2 e^{-x}, we need to evaluate the function at the critical points and endpoints of the interval. The absolute maximum for the function on the interval [-1,3] is at x = 3.

Step-by-step explanation:

To find the absolute maximum for the function f(x) = x^2 e^{-x} on the interval [-1,3], we need to evaluate the function at the critical points and endpoints of the interval. To do this, we first find the derivative of the function, which is f'(x) = (2x - x^2)e^{-x}. Next, we find the critical points by setting the derivative equal to zero and solving for x. The critical point is x = 1. Finally, we evaluate the function at the critical point and endpoints to find the maximum value. Substituting x = -1, 1, and 3 into the function, we find that the maximum value occurs at x = 3. Therefore, the absolute maximum for the function is at x = 3.

User Farhad Navayazdan
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