$\int {{e^x}\left( {\frac{{1 - \sin x}}{{1 - \cos x}}} \right)\,dx} $ का मान ज्ञात कीजिए।

  • A
    $- {e^x}\tan \left( {x/2} \right)$
  • B
    $- {e^x}\cot \left( {x/2} \right)$
  • C
    $- \frac{1}{2}{e^x}\tan \left( {\frac{x}{2}} \right)$
  • D
    $\frac{1}{2}{e^x}\cot \left( {\frac{x}{2}} \right)$

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$\int e^x \left( \frac{1+\sin x}{1+\cos x} \right) dx =$

यदि $\int \frac{3-x^2}{1-2 x+x^2} e^x d x=e^x f(x)+c$ है, तो $f(x)$ क्या है?

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