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

  • A
    $\left( {x + 1} \right){e^{x + \frac{1}{x}}} + C$
  • B
    $- x{e^{x + \frac{1}{x}}} + C$
  • C
    $\left( {x - 1} \right){e^{x + \frac{1}{x}}} + C$
  • D
    $x{e^{x + \frac{1}{x}}} + C$

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$\int \left( \frac{2 - \sin 2x}{1 - \cos 2x} \right) e^x \, dx$ ની કિંમત શોધો.

ધારો કે $f(t) = \int \left( \frac{1 - \sin(\ln t)}{1 - \cos(\ln t)} \right) dt$,$t > 1$ માટે. જો $f(e^{\pi/2}) = -e^{\pi/2}$ અને $f(e^{\pi/4}) = \alpha e^{\pi/4}$ હોય,તો $\alpha$ ની કિંમત શોધો.

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