Lösung 1.2:3d

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We differentiate the function successively, one part at a time,

\displaystyle \frac{d}{dx}\,\sin \bbox[#FFEEAA;,1.5pt]{\cos\sin x} = \cos \bbox[#FFEEAA;,1.5pt]{\cos\sin x}\cdot \bigl( \bbox[#FFEEAA;,1.5pt]{\cos\sin x}\bigr)'\,,

and the next differentiation becomes

\displaystyle \begin{align}

\frac{d}{dx}\,\cos \bbox[#FFEEAA;,1.5pt]{\sin x} &= -\sin \bbox[#FFEEAA;,1.5pt]{\sin x}\cdot \bigl( \bbox[#FFEEAA;,1.5pt]{\sin x}\bigr)'\\[5pt] &= -\sin \sin x\cdot \cos x\,\textrm{.} \end{align}

The answer is thus

\displaystyle \begin{align}

\frac{d}{dx}\,\sin \cos \sin x &= \cos \cos \sin x\cdot ( -\sin \sin x\cdot \cos x)\\[5pt] &= -\cos \cos \sin x\cdot \sin \sin x\cdot \cos x\,\textrm{.} \end{align}