differentiation

Question: If $y = \cos (\sin {x^2}),$then at $x = \sqrt {\frac{\pi }{2}} ,\frac{{dy}}{{dx}}$=



1) – 2
2) 2
3) $ - 2\sqrt {\frac{\pi }{2}} $
4) 0
Solution: Explanation: Explanation
standard-differentiation

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