WBJEE 2018 Math Solved Paper

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Question : 34 of 75

Marks: +1, -0

If ∫esinx[

xcos3x−sinx

cos2x

]dx =esinx‌f(x)+c where c is constant of integration, then f(x) =

secx - x
x - secx
tanx - x
x - tanx

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