I'm doing polar integration and I'm having some problems.

$\displaystyle 4*\int_{0}^{\frac{\pi}{2}} \int_{0}^{1} ln(r^{2}+1)rdrd\theta$

The answer comes out to

$\displaystyle \pi(ln(4)-1)$ but I always end up with $\displaystyle \pi(ln(2)-1)$

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- Nov 11th 2008, 07:15 PMFalconPUNCH!Polar Double Integration help
I'm doing polar integration and I'm having some problems.

$\displaystyle 4*\int_{0}^{\frac{\pi}{2}} \int_{0}^{1} ln(r^{2}+1)rdrd\theta$

The answer comes out to

$\displaystyle \pi(ln(4)-1)$ but I always end up with $\displaystyle \pi(ln(2)-1)$ - Nov 11th 2008, 07:35 PMmr fantastic
- Nov 11th 2008, 07:36 PMFalconPUNCH!