# Problem of the Week

## Updated at Feb 29, 2016 2:19 PM

To get more practice in calculus, we brought you this problem of the week:

How would you differentiate $$\frac{1}{7\sqrt{x}}$$?

Check out the solution below!

$\frac{d}{dx} \frac{1}{7\sqrt{x}}$

 1 Use Constant Factor Rule: $$\frac{d}{dx} cf(x)=c(\frac{d}{dx} f(x))$$.$\frac{1}{7}(\frac{d}{dx} \frac{1}{\sqrt{x}})$2 Use Power Rule: $$\frac{d}{dx} {x}^{n}=n{x}^{n-1}$$.$-\frac{1}{14{x}^{\frac{3}{2}}}$Done-1/(14*x^(3/2))