यदि $\int \frac{\cos (13 x)-\cos (14 x)}{1+2 \cos (9 x)} d x=\frac{\sin (4 x)}{a}-\frac{\sin (5 x)}{b}+c$ है,तो $a^b=$

  • A
    $4^5$
  • B
    $5^4$
  • C
    $4^4$
  • D
    $5^5$

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$\int (1+\tan^2 x)(1+2x \tan x) dx =$

$y=\int \cos \left\{2 \tan ^{-1} \sqrt{\frac{1-x}{1+x}}\right\} d x$ किसका समीकरण है?

$\int \frac{x+\sin x}{1+\cos x} d x=$

यदि $f(x) = \int x^2 \cos^2 x (2x \tan^2 x - 2x - 6 \tan x) dx$ और $f(0) = \pi$ है,तो $f(x) =$

$\int (\sin^{-1} x + \cos^{-1} x) \, dx = $

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