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10-56.

For 2 ≤ x ≤ 4, find the point(s) on y = x4 − 12x3 + 52x2 − 96x + 64 at which the slope is the steepest. Homework Help ✎

Determine the maximum of the slope function.
That is, take the second derivative and set it equal to 0.

Remember to check the endpoints.