$\int x^{2} [ \sqrt{2} \sin ( \frac{\pi}{4} + x ) + e^{x} ] dx =$

  • A
    $( x^{2} + 2 x - 2 ) \sin x + ( - x^{2} + 2 x + 2 ) \cos x + ( x^{2} - 2 x + 2 ) e^{x} + C$
  • B
    $( - x^{2} + 2 x - 2 ) \sin x + ( x^{2} + 2 x - 2 ) \cos x + ( x^{2} - 2 x + 2 ) e^{x} + C$
  • C
    $( x^{2} + 2 x + 2 ) \sin x + ( - x^{2} - 2 x - 2 ) \cos x + ( x^{2} - 2 x + 2 ) e^{x} + C$
  • D
    $( x^{2} - 2 x - 2 ) \sin x + ( - x^{2} + 2 x - 2 ) \cos x + ( x^{2} - 2 x + 2 ) e^{x} + C$

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જો $f(x)$ નું પ્રતિ-વિકલિત (antiderivative) $e^x$ હોય અને $g(x)$ નું પ્રતિ-વિકલિત $\cos x$ હોય, તો $\int f(x) \cos x \, dx + \int g(x) e^x \, dx =$

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