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Question

If y=sin2(tan11x21+x2), then dydx=

A
x
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B
x
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C
1
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D
1
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Solution

The correct option is D x
y=sin2[tan11x21+x2]

Put x2=cosθ

y=sin2[tan1(tanθ2)]=sin2θ2=1cosθ2=1x22

dydx=x

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