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int sqrt((1 - x)/(1 + x )) dx is...

` int sqrt((1 - x)/(1 + x )) dx ` is

A

` sqrt(1 - x^(2)) + sin ^(-1) x + c `

B

` sin ^(-1) x - sqrt( 1 - x^(2)) + c `

C

` log | x + sqrt(1 - x^(2))| - sqrt(1 - x^(2)) + c `

D

` sqrt (1 + x^(2)) + log | x + sqrt( 1 - x^(2)) | + c `

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The correct Answer is:
A, B, C
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