$I = \int_{\pi/4}^{\pi/3} \frac{8 \sin x - \sin 2x}{x} dx$. तो

  • A
    $\frac{\pi}{2} < I < \frac{3\pi}{4}$
  • B
    $\frac{\pi}{5} < I < \frac{5\pi}{12}$
  • C
    $\frac{5\pi}{12} < I < \frac{\sqrt{2}}{3} \pi$
  • D
    $\frac{3\pi}{4} < I < \pi$

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$0 < \alpha < \pi$ के लिए निश्चित समाकल $\int_0^1 \frac{dx}{x^2 + 2x\cos \alpha + 1}$ का मान किसके बराबर है?

Difficult
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यदि $\int_0^1 \frac{1}{\sqrt{3+x}+\sqrt{1+x}} d x=a+b \sqrt{2}+c \sqrt{3}$,जहाँ $a, b, c$ परिमेय संख्याएँ हैं,तो $2 a+3 b-4 c$ का मान ज्ञात कीजिए:

समाकलन $\int_{-1}^2 \log _e\left(x+\sqrt{x^2+1}\right) d x$ का मान है:

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$\int_{0}^{\pi/4} \sqrt{1+\sin 2x} dx = \rule{1cm}{0.15mm}$

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