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$I = \int_{-\frac{\pi}{2}}^{\frac{\pi}{2}} \frac{x^2 \cos x}{1+e^{-x}} \,dx$ का मान ज्ञात कीजिए।

$\int_{\frac{-\pi}{2}}^{\frac{\pi}{2}}(x^5-x^3 \cos x+\sin^3 x-3) \, dx = $ . . . . . .

$\int_0^\pi x \sin^3 x \cos^2 x \, dx =$

एक फलन $f(x)$ किसी वास्तविक संख्या $c$ $(c > 1)$ और $\forall\, x > 0$ के लिए $f(x) = f(\frac{c}{x})$ को संतुष्ट करता है। यदि $\int_{1}^{\sqrt{c}} \frac{f(x)}{x} dx = 3$ है,तो $\int_{1}^{c} \frac{f(x)}{x} dx$ का मान ज्ञात कीजिए।

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

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