# Indefinite integral

• Sep 21st 2008, 04:04 PM
offahengaway and chips
Indefinite integral
Having no luck with this question. Any help would be great.

Give an expression for the indefinite integral

Integral of 1/(sqrt x) (1+sqrt x)^2 dx (x>0)
• Sep 21st 2008, 04:13 PM
Jhevon
Quote:

Originally Posted by offahengaway and chips
Having no luck with this question. Any help would be great.

Give an expression for the indefinite integral

Integral of 1/(sqrt x) (1+sqrt x)^2 dx (x>0)

do a substitution. $u = 1 + \sqrt{x}$

you will end up with $2 \int u^{-2}~du$

which i am sure you can handle :)
• Sep 22nd 2008, 03:07 AM
Showcase_22
I would also use the substitution method, but I did this to make it look different (not really sure if it helps):

http://i116.photobucket.com/albums/o...roblem69-1.jpg