$\int \frac{\cos 2 x \cdot \sin 4 x}{\cos ^4 x\left(1+\cos ^2 2 x\right)} d x=$

  • A
    $\log \left[\frac{1+\cos ^2 2 x}{1+\cos 2 x}\right]-\tan ^2 x+c$
  • B
    $\log \left(\frac{1+\cos ^2 2 x}{1+\cos 2 x}\right)+\tan ^2 x+c$
  • C
    $\log \left(\frac{1+\cos 2 x}{1+\cos ^2 2 x}\right)+\sec ^2 x+c$
  • D
    $\log \left(\frac{(1+\cos 2 x)^2}{1+\cos ^2 2 x}\right)+\sec ^2 x+c$

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यदि $f(x) = \frac{\sin^2 \pi x}{1+\pi^x}$ है,तो $\int (f(x) + f(-x)) \, dx$ का मान ज्ञात कीजिए।

यदि $\int \frac{1}{a^2 \sin^2 x + b^2 \cos^2 x} dx = \frac{1}{12} \tan^{-1}(3 \tan x) + C$ है,तो $a \sin x + b \cos x$ का अधिकतम मान ज्ञात कीजिए:

List-$I$ की निम्नलिखित वस्तुओं को List-$II$ में सुमेलित कीजिए। सही विकल्प चुनिए।
List-$I$List-$II$
$1. \int \frac{\sin^2 x}{\cos^4 x} dx$$A. \frac{\tan^2 x}{2} + \ln|\cos x| + c$
$2. \int \frac{\sin^4 x}{\cos^2 x} dx$$B. \cos x + \sec x + c$
$3. \int \frac{\sin^3 x}{\cos^2 x} dx$$C. \frac{\tan^3 x}{3} + c$
$4. \int \frac{\sin^3 x}{\cos^3 x} dx$$D. \tan x + \frac{\sin 2x}{4} - \frac{3x}{2} + c$
$E. \cos x - \sec x + c$

$\int \frac{\sqrt{1-x^2} \sin ^{-1} x+x}{\sqrt{1-x^2}} d x=$

यदि $I_n = \int \tan^n x \ dx$,और $I_0 + I_1 + 2 I_2 + 2 I_3 + 2 I_4 + I_5 + I_6 = \sum_{K=1}^n \frac{\tan^K x}{K}$,तो $n = $

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