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Question

If y=log(1x21+x2),thendydx then dy/dx is equal to……


A

4x1x4

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B

4x31x4

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C

14x4

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D

4x31x4

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Solution

The correct option is A

4x1x4


dydx=1+x21x2×2x(1+x2)(1x2)(1+x2)2=4x1x4


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