# Math Help - integration by parts

1. ## integration by parts

integrate integral from 1 to 0 (r^3)/(square root of 4+(r^2))dr.

2. Originally Posted by twilightstr
integrate integral from 1 to 0 (r^3)/(square root of 4+(r^2))dr.
If you make the substitution

$u = r^2 + 4$

and convert to a new integral involving u, things should work out.