TeX Quellcode:

\begin{array}{rclll} f''(x) &=& 6x^2-6 \cr\cr f''\left(-\sqrt{3}\right) &=&6 \cdot\left(-\sqrt{3}\right)^2-6 \quad = \quad 12 & > & 0\quad \Rightarrow \text{Tiefpunkt} \cr f''(0) &=& 6 \cdot 0^2-6 \quad = \quad -6 & < & 0\quad \Rightarrow \text{Hochpunkt} \cr f''\left(\sqrt{3}\right) &=&6 \cdot \sqrt{3}^2-6 \quad = \quad 12 & > & 0\quad \Rightarrow \text{Tiefpunkt} \end{array}