ट्रेपेज़ॉइडल नियम का उपयोग करके $h=1$ के साथ $\int_0^4 \frac{d x}{1+x^2}$ समाकलन का मान क्या होगा?

  • A
    $\frac{63}{85}$
  • B
    $\tan ^{-1}(4)$
  • C
    $\frac{108}{85}$
  • D
    $\frac{113}{85}$

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निश्चित समाकल $\int_{0}^{\frac{\pi}{4}} \frac{\sin x \cos x}{\cos ^{4} x+\sin ^{4} x} d x$ का मान ज्ञात कीजिए।

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यदि $f(x) = \begin{cases} \frac{6 x^2 + 1}{4 x^3 + 2 x + 3}, & 0 < x < 1 \\ x^2 + 1, & 1 \le x \le 2 \end{cases}$ है,तो $\int_0^2 f(x) dx =$

$\int_{0}^{3} \frac{3x + 1}{x^2 + 9} dx = $

$\int_{1}^{3} \left(\frac{x^{2}+1}{4x}\right)^{-1} dx = $ . . . . . . .

यदि $\int_{1}^{k}(3x^{2}+2x+1)dx=11$ है,तो $k=$

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