int tan(x-alpha).tan(x+alpha).tan 2x dx ...

`int tan(x-alpha).tan(x+alpha).tan 2x dx` is equal to

A

`l n|(sqrt(sec2x)*sec(x+alpha))/(sec(x-alpha))|+C`

B

`l n|(sqrt(sec2x))/(sec(x-alpha)sec(x+alpha))|+C`

C

`l n|(sqrt(sec2x)*sec(x+alpha))/(sec(x+alpha))|+C`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:

B

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