જો $y = \tan^{-1} \left( \frac{1 - \cos 3x}{\sin 3x} \right)$ હોય,તો $\frac{dy}{dx} = \ldots$

  • A
    $-\frac{3}{2}$
  • B
    $-\frac{1}{2}$
  • C
    $\frac{3}{2}$
  • D
    $\frac{1}{2}$

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વિકલન શોધો: $\frac{d}{dx} \tan^{-1}(\sec x + \tan x) = $

${\cos ^{ - 1}}\left( {\frac{{1 - {x^2}}}{{1 + {x^2}}}} \right)$ નું ${\cot ^{ - 1}}\left( {\frac{{1 - 3{x^2}}}{{3x - {x^3}}}} \right)$ ની સાપેક્ષમાં વિકલન શું થાય?

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