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If y=tan^(-1)sqrt((x+1)/(x-1)),t h e n(d...

If `y=tan^(-1)sqrt((x+1)/(x-1)),t h e n(dy)/(dx)i s` `(-1)/(2|x|sqrt(x^2-1))` (b) `(-1)/(2xsqrt(x^2-1))` `1/(2xsqrt(x^2-1))` (d) none of these

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