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If linear function f(x) and g(x) satisfy...

If linear function `f(x)` and `g(x)` satisfy `int[(3x-1)cosx+(1-2x)sinx]dx=f(x)cos x + g(x) sin x+C`, then

A

f(x) = 3x-5

B

g(x) =3+x

C

f(x) =3 (x-1)

D

g(x) =3(x-1)

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A
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