જો $f : R \rightarrow R$ એક સતત વિધેય હોય જે $\int \limits_0^{\pi / 2} f(\sin 2x) \cdot \sin x \, dx + \alpha \int \limits_0^{\pi / 4} f(\cos 2x) \cdot \cos x \, dx = 0$ નું સમાધાન કરે,તો $\alpha$ ની કિંમત શોધો.

  • A
    $-\sqrt{3}$
  • B
    $\sqrt{2}$
  • C
    $\sqrt{3}$
  • D
    $-\sqrt{2}$

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જો $\int_{-\infty}^{\infty} f(x) dx = 1$ હોય,તો $\int_{-\infty}^{\infty} f\left(x - \frac{1}{x}\right) dx$ ની કિંમત કેટલી થાય?

$\int_{-\frac{\pi}{2}}^{\frac{\pi}{2}} \sin^2 x \cos^2 x(\sin x + \cos x) dx =$

વિધાન $-1$: સંકલન $\int_{\frac{\pi}{6}}^{\frac{\pi}{3}} \frac{dx}{1 + \sqrt{\tan x}} = \frac{\pi}{6}$ નું મૂલ્ય છે.
વિધાન $-2$: $\int_{a}^{b} f(x) dx = \int_{a}^{b} f(a + b - x) dx$.

$\int_{0}^{\frac{\pi}{2}} \log \sin x \, dx$ ની કિંમત શોધો.

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$\int_0^\pi \frac{x \sin x}{\sin ^2 x+2 \cos ^2 x} d x=$

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