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int (sec^(2)(logx ))/(x)dx...

`int (sec^(2)(logx ))/(x)dx`

A

`log(tanx)+C`

B

`-log(tanx)+C`

C

`tan(tanx)+C`

D

`-tan(logx)+C`

Text Solution

Verified by Experts

The correct Answer is:
C

Put `logx=t and(1)/(x)dx=dt`.
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