# Math Help - Integral Question

1. ## Integral Question

What does it mean when you have a problem that looks like this:

$\int \frac{dx}{\sqrt{25 + 16x^2}}$

I don't understand why the "dx" is on top of the fraction. Is that equivalent to

$\int \frac{1}{\sqrt{25 + 16x^2}} dx$

or is it different?

2. They're the same, just a matter of tastes.