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int sinx .log(Secx + tanx ) dx = f(x) + ...

`int` sinx .log(Secx + tanx ) dx = f(x) + x + c then f(x) =

A

cosx.log(Secx+tanx)

B

sinx.log(Secx+tanx)

C

`-`cosx.log(Secx +tanx)

D

`-`cosx.log Secx

Text Solution

Verified by Experts

The correct Answer is:
C
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