$\int_{ - \pi }^{\pi } {\frac{{2x(1 + \sin x)}}{{1 + {{\cos }^2}x}}dx} $ ની કિંમત શોધો.

  • A
    ${\pi ^2}/4$
  • B
    ${\pi ^2}$
  • C
    $0$
  • D
    $\pi /2$

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$\int_0^2 x^2(2-x)^5 d x=$

જો $\int_{0}^{1} \tan ^{-1} x \, dx = p$ હોય,તો $\int_{0}^{1} \tan ^{-1}\left(\frac{1-x}{1+x}\right) \, dx$ ની કિંમત શોધો.

ધારો કે $f:R \to R$ અને $g:R \to R$ સતત વિધેયો છે,તો સંકલન $\int_{-\pi/2}^{\pi/2} [f(x) + f(-x)][g(x) - g(-x)] \, dx$ ની કિંમત શોધો.

ધારો કે $g_i: \left[\frac{\pi}{8}, \frac{3\pi}{8}\right] \rightarrow \mathbb{R}, i=1, 2$,અને $f: \left[\frac{\pi}{8}, \frac{3\pi}{8}\right] \rightarrow \mathbb{R}$ એવા વિધેયો છે કે જેથી $g_1(x)=1, g_2(x)=|4x-\pi|$ અને $f(x)=\sin^2 x$,દરેક $x \in \left[\frac{\pi}{8}, \frac{3\pi}{8}\right]$ માટે.
$S_i = \int_{\frac{\pi}{8}}^{\frac{3\pi}{8}} f(x) \cdot g_i(x) dx, i=1, 2$ વ્યાખ્યાયિત કરો.
$(1)$ $\frac{16S_1}{\pi}$ નું મૂલ્ય.
$(2)$ $\frac{48S_2}{\pi^2}$ નું મૂલ્ય.

$\int_{ - \pi /2}^{\pi /2} {\frac{{\cos x}}{{1 + {e^x}}}\,dx = } $

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