The last part of a integral

1. Dec 16, 2006

ddr

1. The problem statement, all variables and given/known data

4
∫ √x/(1+√x)
0

2. Relevant equations

3. The attempt at a solution

t=√x ; x=t^2 ; dx= 2t

2
∫ (2t^2)/(1+t)
0

and now?
thanx

2. Dec 16, 2006

D H

Staff Emeritus
Simplify your denominator with another substitution.

3. Dec 16, 2006

neutrino

Bring the 2 outside the integral and then add and subtract 1 in the numerator.

4. Dec 18, 2006

dextercioby

First subtract and then add 1 in the numerator.

Daniel.

5. Dec 18, 2006

NTUENG

Hi ddr,

Perform polynomial algebraic division and integrate the result directly.