- #1
learnonthefly
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Homework Statement
|x3sqrt(4-x2)dx
Homework Equations
uv - | vdu
The Attempt at a Solution
u = x2 v = -1/3(4-x2)3/2
du = -2xdx dv = x(4-x2)1/2
uv - | vdu
x2(1/3)(4-x2)3/2 - | 1/3(4-x2)3/2(2xdx)
x2(1/3)(4-x2)3/2 +(1/3)|(4-x2)3/2(2xdx)
u = 4 - x2
du = -2xdx
x2(1/3)(4-x2)3/2 - (1/3)| u3/2du
x2(1/3)(4-x2)3/2-(1/3)2/5u5/2
x2(1/3)(4-x2)3/2-(1/3)(2/5)(4-x2)5/2
x2-(1/3)(4-x2)3/2-(2/15)(4-x2)5/2
Is this all I need? The answer I was supposed to get is -1/15(4-x2)3/2(8+3x2) I guess I don't see how that correlates
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