# Problem of the Week

## Updated at Nov 10, 2014 12:57 PM

How can we find the derivative of $${x}^{3}-{x}^{5}$$?

Below is the solution.

$\frac{d}{dx} {x}^{3}-{x}^{5}$

 1 Use Power Rule: $$\frac{d}{dx} {x}^{n}=n{x}^{n-1}$$.$3{x}^{2}-5{x}^{4}$Done3*x^2-5*x^4