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int sec x log (sec x+tan x) dx....

`int sec x log (sec x+tan x) dx.`

A

`[ log ( sec x + tan x )]^2 +c `

B

`(1)/(2)[ log ( sec x + tan x )]^2 +c `

C

`sec^2 x + tan x sec x +c `

D

None of these

Text Solution

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The correct Answer is:
B
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