help with a littlie integration

**sean123** · April 10th 2010, 06:38 PM

integrate [1 + (y) ^1/2]^1/2 from 0 to 9

**Sudharaka** · April 10th 2010, 06:51 PM

Originally Posted by sean123

integrate [1 + (y) ^1/2]^1/2 from 0 to 9

Dear sean123,

Do you mean, $\int_{0}^{9}\left(1+y^{\frac{1}{2}}\right)^{\frac{ 1}{2}}dy$

**maddas** · April 10th 2010, 06:53 PM

Try the substitution $y = (s-1)^2$ and see how it goes...

**confusedgirl** · April 10th 2010, 06:57 PM

yes, i think that's what sean123 means, i have the same problem that i can't solve

**Sudharaka** · April 10th 2010, 07:05 PM

Originally Posted by confusedgirl

yes, i think that's what sean123 means, i have the same problem that i can't solve

Dear confusedgirl,

Then maddas' substitution will surely solve the problem.

Math Help - help with a littlie integration