मान लीजिए $f(x) = \frac{2\sin^2 x - 1}{\cos x} + \frac{\cos x(2\sin x + 1)}{1 + \sin x}$ है,तो $\int e^x(f(x) + f'(x)) dx$ ज्ञात कीजिए (जहाँ $c$ समाकलन का स्थिरांक है)।

  • A
    $e^x \tan x + c$
  • B
    $e^x \cot x + c$
  • C
    $e^x \csc^2 x + c$
  • D
    $e^x \sec^2 x + c$

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