# Problem of the Week

## Updated at May 7, 2018 5:40 PM

This week's problem comes from the calculus category.

How would you differentiate $$9x$$?

Let's begin!

$\frac{d}{dx} 9x$

 1 Use Power Rule: $$\frac{d}{dx} {x}^{n}=n{x}^{n-1}$$.$9$Done9