यदि $\int_0^{2 \pi} |x \sin x| \, dx = k \pi$ है,तो $k =$

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

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मान लीजिए $g(t) = \int_{-\pi/2}^{\pi/2} \cos \left(\frac{\pi}{4} t + f(x)\right) \, dx$,जहाँ $f(x) = \log_e \left(x + \sqrt{x^2 + 1}\right)$,$x \in R$ है। तो निम्नलिखित में से कौन सा सही है?

$I=\int_{\sqrt{\log _e 2}}^{\sqrt{\log _e 3}} \frac{x \sin x^2}{\sin x^2+\sin \left(\log _e 6-x^2\right)} d x$ का मान ज्ञात कीजिए।

$\int_{-1}^1 \sin^5 x \cos^4 x \, dx = $ . . . . . .

$\int_{0}^{\pi /2} \frac{e^{x^2}}{e^{x^2} + e^{(\pi /2 - x)^2}} dx$ का मान क्या है?

$\int_2^3 {\frac{{\sqrt x }}{{\sqrt {5 - x} + \sqrt x }}} \,dx$ का मान क्या है?

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