$\int e^{x} \left[ \frac{\sin x + \cos x}{\cos^2 x} \right] dx$ ની કિંમત શોધો.

  • A
    $e^{x} \operatorname{cosec} x + C$
  • B
    $e^{x} \cot x + C$
  • C
    $e^{x} \sec x + C$
  • D
    $e^{x} \tan x + C$

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વિધાન $(A)$: $\int_2^e \left(\frac{1}{\log_e x} - \frac{1}{(\log_e x)^2}\right) dx = e - 2 \log_2 e$
કારણ $(R)$: $\int_a^b e^x (f(x) + f'(x)) dx = e^b f(b) - e^a f(a)$

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.

$\int {{e^x}\sin x(\sin x + 2\cos x)} \,dx = $

$\int {\frac{{(x + 3){e^x}}}{{{{(x + 4)}^2}}}\,dx} = \,$

$\int \frac{e^x(x + 3)}{(x + 5)^3} dx = $

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