1.

\[\underset{x\to 0}{\mathop{\lim }}\,\frac{\sqrt{1+x}-\sqrt{1-x}}{{{\sin }^{-1}}x}=\] [AI CBSE 1989, 90; DSSE 1989]

A. 2
B. 1
C. ?1
D. None of these
Answer» C. ?1


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