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If y=sin ^(-1)((x)/( sqrt(x^(2) +a^(2))...

If ` y=sin ^(-1)((x)/( sqrt(x^(2) +a^(2)))) ,then (dy)/(dx)=`

A

` (-a^(2))/( a^(2) +x^(2))`

B

` (a^(2))/( a^(2) +x^(2))`

C

` (-a)/( a^(2) +x^(2))`

D

` (a)/( a^(2) +x^(2))`

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The correct Answer is:
D
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