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If x=e^y+e^((y+ tooo)) , x >0 , then (d...

If `x=e^y+e^((y+ tooo))` , `x >0` , then `(dy)/(dx)` is equal to........

A

` x/(1+ x)`

B

`1/x`

C

`(1-x)/x`

D

`x/(1-x)`

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The correct Answer is:
B
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