TeX Quellcode:
\begin{array}{rclcl} f(-1) &=& \dfrac23 \cdot (-1)^2 + \dfrac83 \cdot (-1) +4 &=& 2 \cr\cr f(0) &=& \dfrac23 \cdot 0^2 + \dfrac83 \cdot 0 + 4 &=& 4 \cr\cr f(2) &=& \dfrac23 \cdot 2^2 + \dfrac83 \cdot 2 + 4 &=& 12 \end{array}