यदि $f(x) = \begin{cases} \sqrt{1-x} & 0 \leqslant x \leqslant 1 \\ (7x-6)^{-1/3} & 1 < x \leqslant 2 \end{cases}$ है,तो $\int_{0}^{2} f(x) dx$ का मान ज्ञात कीजिए।

  • A
    $\frac{55}{42}$
  • B
    $\frac{31}{12}$
  • C
    $\frac{1}{42}$
  • D
    $\frac{31}{21}$

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मान लीजिए $f:(0, \infty) \rightarrow \mathbb{R}$ और $F(x)=\int_0^x t f(t) d t$ है। यदि $F(x^2)=x^4+x^5$ है,तो $\sum_{r=1}^{12} f(r^2)$ का मान ज्ञात कीजिए:

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

निश्चित समाकल $\int\limits_{\infty}^{0} \frac{z e^{-z}}{\sqrt{1-e^{-2z}}} \, dz$ का मान ज्ञात कीजिए।

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

निश्चित समाकल $\int_{\frac{\pi}{6}}^{\frac{\pi}{4}} \operatorname{cosec} x \, dx$ का मान ज्ञात कीजिए।

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