Find the derivative of f(x) = -10x2 + 4x at x = 11.

f'(11) = -216

Explanation:

Given in the question a function

f(x) = -10x² + 4x

Step 1

Find derivative

f'(x) = -(2)10x + 4

     = -20x + 4

Step 2

Substitute x with 11

-20(11) + 4

-216

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