MCQ
$\frac{d}{d x}\left(e^{\cos x}\right)=?$
  • A
    $(\sin x) e^{\cos x}$
  • $-(\sin x) e^{\cos x}$
  • C
    $(\cos x) e^{\cos x}$
  • D
    $-(\cos x) e^{\cos x}$

Answer

Correct option: B.
$-(\sin x) e^{\cos x}$
B

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