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int ((e^(x)-e^(-x))dx)/((e^(x) + e^(-x))...

`int ((e^(x)-e^(-x))dx)/((e^(x) + e^(-x)) log (cosh x) =`

A

log (tanh x) + c

B

`2 log (e^(x) + e^(-x)) + c`

C

`2 log (e^(x) - e^(-x)) + c`

D

log[log (cosh x)] + c

Text Solution

Verified by Experts

The correct Answer is:
D
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