1. ## [SOLVED] Another integral

Now another question
$
\int \frac{1}{\sqrt {x^2+a^2}}dx
$

2. Sorry sorry I got it coz I have to make the substitution of x=tan u

3. Originally Posted by roshanhero
Now another question
$
\int \frac{1}{\sqrt {x^2+a^2}}dx
$
Note that if $a=0$
It will be easy.
For the other values of a
Substitute $x=a tan\theta$