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int(2)/((e^(x)+e^(-x))^(2))dx is equal t...

`int(2)/((e^(x)+e^(-x))^(2))dx` is equal to

A

`-(e^(-x))/((e^(x)+e^(-x)))+C`

B

`(1)/((e^(x)+e^(-x)))+C`

C

`1/((e^(x)+1)^(2))+C`

D

`1/((e^(x)-e^(-x))^(2))+C`

Text Solution

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The correct Answer is:
A
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