Use an algebraic strategy to verify that the point given for the function is either a maximum or minimum.

f(x) = x3 - 3x; (-1,2)

The answer should be 0 yet i get another answer. This is what i did:[COLOR=rgb(0, 0, 0)]

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"h's" cancel

It should = 0 however and the slopes should be negative right side and positive left side I believe proving it is a maximum.