फलन $f(x) = \frac{\lambda \sin x + 6 \cos x}{2 \sin x + 3 \cos x}$ वर्धमान फलन है,यदि:

  • A
    $\lambda > 1$
  • B
    $\lambda < 1$
  • C
    $\lambda < 4$
  • D
    $\lambda > 4$

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