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Evaluate: intsqrt(2a x-x^2)\ dx...

Evaluate: `intsqrt(2a x-x^2)\ dx`

Text Solution

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Let` I =int sqrt{2 a x-x^{2}} d x `
`=int sqrt{a^{2}-(x-a)^{2}} d x `
`=frac{x-a}{2} sqrt{a^{2}-(x-a)^{2}}+frac{a^{2}}{2} sin ^{-1}(frac{x-a}{a})+C `
`=frac{x-a}{2} sqrt{2 a-x^{2}}+frac{a^{2}}{2} sin ^{-1}(frac{x-a}{a})+C `
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