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The value of int0^(pi/4) (e^(1/(cos^2x...

The value of `int_0^(pi/4) (e^(1/(cos^2x)).sinx)/(cos^3 x)dx` equals (A) `(e^2-e)/2` (B) `(e^4-1)/4` (C) `(e^2+e)/4` (D) `(e^4-1)/2`

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