1.

Differential coefficient of \[{{\sin }^{-1}}\frac{1-x}{1+x}w.r.t\]\[\sqrt{x}\]is          [Roorkee 1984]

A.            \[\frac{1}{2\sqrt{x}}\]
B.            \[\frac{\sqrt{x}}{\sqrt{1-x}}\]
C.            1
D.            None of these
Answer» E.


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