यदि $\int \frac{1}{(\sin x + 4)(\sin x - 1)} dx = A \frac{1}{\tan \frac{x}{2} - 1} + B \tan^{-1}(f(x)) + C$ है,तो

  • A
    $A = \frac{1}{5}, B = \frac{-2}{5\sqrt{15}}, f(x) = \frac{4\tan x + 3}{\sqrt{15}}$
  • B
    $A = -\frac{1}{5}, B = \frac{1}{\sqrt{15}}, f(x) = \frac{4\tan(\frac{x}{2}) + 1}{\sqrt{15}}$
  • C
    $A = \frac{2}{5}, B = -\frac{2}{5}, f(x) = \frac{4\tan x + 1}{5}$
  • D
    $A = \frac{2}{5}, B = -\frac{2}{5\sqrt{15}}, f(x) = \frac{4\tan \frac{x}{2} + 1}{\sqrt{15}}$

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$\int \frac{d x}{(x+1) \sqrt{x^2+4}} = $

यदि $\int f(x) \sin x \cos x \, dx = \frac{1}{2(b^2 - a^2)} \log(f(x)) + c$ है,तो $f(x) = $

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$k \in N$ का वह मान जिसके लिए समाकलन $I_n = \int_0^1 (1 - x^k)^n dx, n \in N$,समीकरण $147 I_{20} = 148 I_{21}$ को संतुष्ट करता है,है :

फलन का समाकलन कीजिए: $\frac{1}{\sqrt{9x^{2}+6x+5}}$

यदि $\int \frac{5 \tan (x)}{\tan (x)-2} d x = x + a \log |\sin (x) - 2 \cos (x)| + k$ है,तो $a$ का मान ज्ञात कीजिए।

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