MCQ
यदि $y=\log \sqrt{\cos x}$, तो $\frac{d y}{d x}=$
  • A
    $\tan x$
  • $-\frac{1}{2} \tan x$
  • C
    $\sqrt{\sin x \cos x}$
  • D
    $\frac{-\sin x}{\sqrt{\cos x}}$

Answer

Correct option: B.
$-\frac{1}{2} \tan x$
B

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