જો $\int \frac{3-x^2}{1-2 x+x^2} e^x d x=e^x f(x)+c$ હોય, તો $f(x)$ શું છે?

  • A
    $\frac{1+x}{1-x}$
  • B
    $\frac{1-x}{1+x}$
  • C
    $\frac{1+x}{x-1}$
  • D
    $\frac{x-1}{1+x}$

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$\int e^x(1-\cot x+\cot^2 x) dx =$

જો $\int e^x \left( \frac{1 - \sin x}{1 - \cos x} \right) dx = f(x) + \text{constant}$ હોય, તો $f(x)$ ની કિંમત શોધો.

$\int e^x \left( \frac{2 + \sin 2x}{1 + \cos 2x} \right) dx = $

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