यदि $y = \tan x \tan 2x \tan 3x$ है,तो $\frac{dy}{dx}$ का मान किसके बराबर है?

  • A
    $3 \sec^2 3x \tan x \tan 2x + \sec^2 x \tan 2x \tan 3x + 2 \sec^2 2x \tan 3x \tan x$
  • B
    $2y (\csc 2x + 2 \csc 4x + 3 \csc 6x)$
  • C
    $3 \sec^2 3x - 2 \sec^2 2x - \sec^2 x$
  • D
    उपरोक्त सभी

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