TeX Quellcode:

\begin{array}{lclcrcl}\quad\mathbb{D}&=&\mathbb{R} \cr \cr f(x) &=& \cos(7x+8) \cr \cr \quad g(h(x)) &=& \cos(h(x)) & \Rightarrow & g'(h(x)) &=& -\sin(h(x)) \cr \quad h(x) &=& 7x+8 & \Rightarrow & h'(x) &=& 7 \cr \cr f'(x) &=& -\sin(7x+8) \cdot 7 \cr &=& -7 \sin(7x+8) \end{array}