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Posted by Allison on Thursday, September 29, 2011 at 1:05pm.

If f(x)=(3)/(x^2) find f′(4).

f(x) = 3x^-2 f'(x) = 3*(-2)x^-3 = -6/x³ f'(4) = -6/64 = -3/32

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