જો $f(x) = \int x^2 \cos^2 x (2x \tan^2 x - 2x - 6 \tan x) dx$ અને $f(0) = \pi$ હોય,તો $f(x) =$

  • A
    $x^2 \sin x + \pi$
  • B
    $\cos x + \pi - 1$
  • C
    $-x^3 \sin 2x + \pi$
  • D
    $x^3 \cos 2x + \pi \cos x$

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$\int x^{2} [ \sqrt{2} \sin ( \frac{\pi}{4} + x ) + e^{x} ] dx =$

જો ${I_1} = \int {{{\sin }^{ - 1}}x\,dx} $ અને ${I_2} = \int {{{\sin }^{ - 1}}\sqrt {1 - {x^2}} } dx$ હોય,તો:

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

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