જો સુરેખ વિધેયો $f(x)$ અને $g(x)$ એ $\int[(3x-1) \cos x + (1-2x) \sin x] dx = f(x) \cos x + g(x) \sin x + C$ નું સમાધાન કરે,તો:

  • 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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