જો $f(x)$ એ $x$ નું અયુગ્મ વિધેય હોય,તો $\int_{ - \frac{\pi }{2}}^{\frac{\pi }{2}} {f(\cos x)\,dx} $ ની કિંમત શું થાય?

  • A
    $0$
  • B
    $\int_0^{\frac{\pi }{2}} {f(\cos x)\,dx} $
  • C
    $2\int_0^{\frac{\pi }{2}} {f(\sin x)\,dx} $
  • D
    $\int_0^\pi {f(\cos x)\,dx} $

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

$\int_{0}^{1} \tan ^{-1}\left[\frac{2 x-1}{1+x-x^{2}}\right] d x=$

જો $I_{n+1} = \int_{0}^{1} \frac{x^{n+1} - 1}{x + 1} dx$ હોય,તો $I_{10} + I_{11} + 2 \log 2$ ની કિંમત શું થાય?

$\int_0^{2 \pi} \frac{x \cos x}{1+\cos x} d x=$

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