$\frac{d}{d x} (c o t (2 \sqrt{x}))$ = কত ?

\frac{- c s e c^{2} (2 \sqrt{x})}{2 \sqrt{x}}

\frac{- c s e c^{2} (2 \sqrt{x})}{\sqrt{x}}

C. -

c s e c^{2} (2 \sqrt{x})

\frac{c s e c^{2} (2 \sqrt{x})}{2 \sqrt{x}}

সঠিক উত্তরঃ B.

\frac{- c s e c^{2} (2 \sqrt{x})}{\sqrt{x}}

Explanation:

ddxcot2x = কত ?