જો $I_n = \int_{0}^{\pi} \frac{\sin(nx)}{\sin(x)} dx$ હોય,તો $\sum_{n=1}^{10} I_n$ ની કિંમત શોધો.

  • A
    $0$
  • B
    $5\pi$
  • C
    $10\pi$
  • D
    $20\pi$

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જો $S_n = \int_0^{\frac{\pi}{2}} \frac{\sin((2n-1)x)}{\sin x} dx$ અને $n$ એ પૂર્ણાંક હોય,તો $S_{n+1} - S_n =$

$\int_{-1}^{1} \log \left( \frac{1+x}{1-x} \right) \, dx = $

ધારો કે $f: R \rightarrow R$ એ $f(x)=\frac{4^x}{4^x+2}$ દ્વારા વ્યાખ્યાયિત વિધેય છે અને $M=\int_{f(a)}^{f(1-a)} x \sin^4(x(1-x)) dx,$ $N=\int_{f(a)}^{f(1-a)} \sin^4(x(1-x)) dx;$ $a \neq \frac{1}{2}.$ જો $\alpha M=\beta N,$ $\alpha, \beta \in N$ હોય,તો $\alpha^2+\beta^2$ ની ન્યૂનતમ કિંમત $.....$ છે.

$\int_{-1}^{1} \log(x + \sqrt{x^2 + 1}) \, dx = $

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