$\int_{-1}^3\left(\cot ^{-1}\left(\frac{x}{x^2+1}\right)+\cot ^{-1}\left(\frac{x^2+1}{x}\right)\right) d x=$

  • A
    $\frac{\pi}{4}$
  • B
    $\pi$
  • C
    $\frac{\pi}{2}$
  • D
    $2\pi$

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Similar Questions

समाकलन $\int \limits_1^3 \left((x-2)^4 \sin^3(x-2) + (x-2)^{2019} + 1\right) dx$ का मान है

यदि ${u_n} = \int_0^{\pi /4} {{\tan ^n}x\,dx,} $ है,तो ${u_n} + {u_{n - 2}} = $

समाकलन $\int_{-1}^{1} \log \left(x+\sqrt{x^{2}+1}\right) \, dx$ का मान क्या है?

मान लीजिए $f(x) = 7 \tan^8 x + 7 \tan^6 x - 3 \tan^4 x - 3 \tan^2 x$ सभी $x \in \left(-\frac{\pi}{2}, \frac{\pi}{2}\right)$ के लिए है। तो सही व्यंजक है/हैं:
$(A) \int_0^{\pi/4} x f(x) dx = \frac{1}{12}$
$(B) \int_0^{\pi/4} f(x) dx = 0$
$(C) \int_0^{\pi/4} x f(x) dx = \frac{1}{6}$
$(D) \int_0^{\pi/4} f(x) dx = 1$

$\int_{0}^{1} \frac{8 \log(1+x)}{1+x^{2}} dx = $

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