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#### DeusAbscondus

##### Active member

- Jun 30, 2012

- 176

I simply wish to confirm that the following is correct:

If $f(x)=\frac{1}{x^3}$ then $f'(x)=-\frac{3}{x^{4}}$

Thanks kindly,

DeusAbs

PS Does this most basic of questions properly belong elsewhere; if so, please tell me somone. Perhaps in pre-calculus?