- #1
negatifzeo
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Homework Statement
[itex]\int (9-x^2)^{5/2} dx [/itex]
Homework Equations
The Attempt at a Solution
Letting[tex] x=3sin\theta[/tex] and [tex] dx=3 cos \theta[/tex],
[itex] 243\int(1-sin^2\theta)^{5/2}3 cos \theta d\theta[/tex]
Taking the 3 out gets
[tex] 729 \int (1-sin^2 \theta)^{5/2} cos \theta d\theta [/tex]
I'm not sure where to go from here. Do I combine everything algebraically and then do a u sub? Or do I integrate by parts here?