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Evaluate: int(xsin^(-1)x)/(sqrt(1-x^2))\...

Evaluate: `int(xsin^(-1)x)/(sqrt(1-x^2))\ dx`

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`I=int frac{x sin ^{-1} x}{sqrt{1-x^{2}}} d x`
Let `x=sin theta or d x=cos theta d theta`
` =int frac{sin theta cdot theta}{cos theta} cos theta d theta `
` =int theta sin theta d theta `
` =-theta cos theta+int cos theta d theta `
` =-theta cos theta+sin theta+C`
` ...
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