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i was wondering if anyone could help me.

The problem says find the critical numbers of f...

f(x) = 2x^3 + 15x^2 - 36x +1

ok i found f ' .....6x^2 + 30x-36,

Now how do i start on finding the critical numbers? Do i have to take the second derivative?

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# Homework Help: Finding Critical numbers

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