# Thread: integral, tan inverse substitution.

1. ## integral, tan inverse substitution.

i'm trying to resolve a problem that i was shown in class, but i took horrible notes and am having trouble figuring out what to do. i need to find the integral of:
dx/(2x^2+3)^2

i think i need to use a tan inverse substitution... but i don't really know how to do it. can anyone help me out?

2. Originally Posted by isuckatcalc
i'm trying to resolve a problem that i was shown in class, but i took horrible notes and am having trouble figuring out what to do. i need to find the integral of:
dx/(2x^2+3)^2

i think i need to use a tan inverse substitution... but i don't really know how to do it. can anyone help me out?
Make the substitution $\displaystyle x = \frac{\sqrt{3}}{\sqrt{2}} \, \tan \theta$.