int(0)^(pi//4)x sec^(2)x " " dx =...

`int_(0)^(pi//4)x sec^(2)x " " dx = `

A

`(pi)/4+logsqrt(2)`

B

`(pi)/4-logsqrt(2)`

C

`1+logsqrt(2)`

D

`1-1/2log2`

Verified by Experts

The correct Answer is:

B

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