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

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

A

log |cos x - sin x | + c

B

log | cos x + sin x | + c

C

`-` log | cos x + sin x | + c

D

`-`log |cos x - sin x | + c

Text Solution

Verified by Experts

The correct Answer is:
B
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