यदि $\int \frac{dx}{(x^2+9) \sqrt{x^2+16}} = \frac{1}{3 \sqrt{7}} \operatorname{Tan}^{-1} \left( K \frac{x}{\sqrt{16+x^2}} \right) + c$ है, तो $K=$

  • A
    $\frac{\sqrt{7}}{3}$
  • B
    $3 \sqrt{7}$
  • C
    $\frac{3}{\sqrt{7}}$
  • D
    $\frac{3}{7}$

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यदि $\int \frac{1}{x^4+8 x^2+9} d x = \frac{1}{k} \left[ \frac{1}{\sqrt{14}} \tan^{-1}(f(x)) - \frac{1}{\sqrt{2}} \tan^{-1}(g(x)) \right] + c$ है, तो $\sqrt{\frac{k}{2} + f(\sqrt{3}) + g(1)} =$

$\int \frac{x}{\sqrt{x^2-2x+5}} dx=$

$\int \frac{dx}{\sqrt{(x-1)(x-2)}}=$

$n \geq 2$ के लिए,मान लीजिए $I_n = \int_0^{\pi / 4} \tan^n x \, dx$ और $F_n = I_n + I_{n-2}$ है। तो,$F_n - F_{n+1} =$

$\int \sec x \tan^3 x \, dx = $

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