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If x in (0, 1) then intcos{2cot^(-1) sqr...

If `x in (0, 1)` then `intcos{2cot^(-1) sqrt((1+x)/(1-x))}dx=`

A

`cot^(-1)x+c`

B

`-cot^(-1)x+c`

C

`(x^(2))/(2)+c`

D

`(-x^(2))/(2)+c`

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