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# differentiation watch

1. For each of the following functions f(x), find the value of x such that f"(x) is equal to the given number:
x^3 - x^2
I can differentiate this to get 3x^2 - 2x but how do i make it 3x^2 - 2x=8 to find what x equals?
2. Move everything to one side so that you have a quadratic that is equal to 0. Then solve the quadratic normally.

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Updated: February 10, 2017
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