# Math Help - Integration Help

1. ## Integration Help

I cannot get the right integral for the following function, help or hints would be appreciated.

$\int\frac{\sqrt{x}}{x+1}dx$

2. Originally Posted by iPod
I cannot get the right integral for the following function, help or hints would be appreciated.

$\int\frac{\sqrt{x}}{x+1}dx$

Try the substitution $x=u^2\Longrightarrow dx=2ydy$ and etc.

Tonio

3. OH rite, I see where i was going wrong,
i managed to get

$2\sqrt{x}+2atan(\sqrt{x})+C$

^i believe that is correct?

4. Originally Posted by iPod
OH rite, I see where i was going wrong,
i managed to get

$2\sqrt{x}+2atan(\sqrt{x})+C$

^i believe that is correct?

Indeed...if by "atan" you actually meant "arctan". But you don't need to ask: just derivate the result and confirm

you get the original function in the integral.

Tonio