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

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

A

`(sin 2x)/(2) + ` C

B

`- (1)/(2) ` sin 2 x + C

C

`(1)/(2) ` log | sec 2 x + tan 2 x + C

D

`(2)/(3)` log | sec x | + C

Text Solution

Verified by Experts

The correct Answer is:
C
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