જો $\int_0^{2 \pi} |x \sin x| \, dx = k \pi$ હોય,તો $k =$

  • A
    $1$
  • B
    $2$
  • C
    $3$
  • D
    $4$

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ધારો કે $g(t) = \int_{-\pi/2}^{\pi/2} \cos \left(\frac{\pi}{4} t + f(x)\right) \, dx$,જ્યાં $f(x) = \log_e \left(x + \sqrt{x^2 + 1}\right)$,$x \in R$. તો નીચેનામાંથી કયું સાચું છે?

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

$\int_{-4}^{4} \log \left(\frac{8-x}{8+x}\right) d x=$

ધારો કે $A = \int\limits_0^1 \frac{e^t}{1 + t} \, dt$. તો $\int\limits_{a - 1}^a \frac{e^{-t}}{t - a - 1} \, dt$ નું મૂલ્ય શોધો:

સંકલન $\int_{-1}^{1} \left\{ \frac{x^{2013}}{e^{|x|}(x^{2}+\cos x)} + \frac{1}{e^{|x|}} \right\} dx$ ની કિંમત શોધો.

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