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July 30, 2014

Homework Help: 12th grade calculus

Posted by dt on Tuesday, November 4, 2008 at 11:22pm.

Let f(x)=[x^3-9x]

[] --- absolute value

a. does f'(x) exist?
b. does f'(3) exist?
c. does f'(-3) exist?
d. determine all extrema of f.

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