Is this answer wrong:

http://img2.pict.com/0c/4d/62/3807793/0/1279506436.jpg

My HW is not accepting it..

http://farm5.static.flickr.com/4093/...a0cdc2749a.jpg

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- Jul 18th 2010, 06:45 PMracewithferrariIntegration...Getting wrong answer
**Is this answer wrong:**

http://img2.pict.com/0c/4d/62/3807793/0/1279506436.jpg

**My HW is not accepting it..**

http://farm5.static.flickr.com/4093/...a0cdc2749a.jpg - Jul 18th 2010, 07:28 PMadkinsjr
I don't see anything wrong with it. Once you do the u-substitution $\displaystyle u=\sqrt{x}$ to obtain $\displaystyle 50\int sin^3(u)du$ it's obviously just a matter of integrating $\displaystyle sin^3(u)du$ which can be done using the reduction formula for powers of sine. The integral calculator used the correct formula. Perhaps you forgot to include the constant of integration?

- Jul 18th 2010, 08:55 PMsimplependulum
Does your HW accept this ?

$\displaystyle \frac{50}{3} \left[ \cos^3(\sqrt{x} ) - 3 \cos(\sqrt{x} ) \right] + C $ - Jul 19th 2010, 01:40 AMracewithferrari
thanks...it didnt accepted with square brackets but it did accepted parenthesis..