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int(1)/((e^(x)+e^(-x))^(2))dx=........

`int(1)/((e^(x)+e^(-x))^(2))dx=.....`

A

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

B

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

C

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

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
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