TeX Quellcode:

\begin{array}{rcl}g\left(x_1\right) &=& g\left(\dfrac{1}{2}\right) \cr&=& -1\cdot\left(\dfrac{1}{2}\right)^2 + 1\cdot\dfrac{1}{2} + 1 \cr &=& \dfrac{5}{4} \cr\cr g\left(x_2\right) &=& g\left(-\dfrac{1}{2}\right) \cr&=& -1\cdot\left(-\dfrac{1}{2}\right)^2 + 1\cdot\left(-\dfrac{1}{2}\right) + 1 \cr &=& \dfrac{1}{4} \end{array}