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If t(1+x^2)=x and x^2+t^2=y then dy/dx ...

If `t(1+x^2)=x and x^2+t^2=y` then `dy/dx at x=2` is

A

`88/125`

B

`488/125`

C

1

D

`244/125`

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The correct Answer is:
B
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  19. Domain of differentiable of the function f(x) = |x -2| cos x is

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