Question

$f\left(x\right)=\frac{1}{x^3}$ then $f^{{}^{\prime }}\left(x\right)=$

Answer 1

We have,

$f\left(x\right)=\frac{1}{x^3}$

On differentiating w.r.t $x$, we get

$f^{{}^{\prime }}\left(x\right)=\frac{-3}{x^4}$

Hence, this is the answer.