differentiation

Question: $\frac{d}{{dx}}({\sin ^{ - 1}}x)$ is equal to



1) $\frac{1}{{\sqrt {1 - {x^2}} }}$
2) $ - \frac{1}{{\sqrt {1 - {x^2}} }}$
3) $\frac{1}{{\sqrt {1 + {x^2}} }}$
4) $\frac{{ - 1}}{{\sqrt {1 + {x^2}} }}$
Solution: Explanation: Explanation
standard-differentiation

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