# Integral Question

• January 31st 2010, 04:57 PM
lysserloo
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?
• January 31st 2010, 05:00 PM
Krizalid
They're the same, just a matter of tastes.