TeX Quellcode:

\begin{array}{rcl}g\left(x_1\right) &=& g\left(2\right) \cr &=& \dfrac{1}{2}\cdot 2+1 \cr &=& 2 \cr\cr g\left(x_2\right) &=& g\left(\dfrac{1}{4}\right) \cr &=& \dfrac{1}{2}\cdot \dfrac{1}{4}+1 \cr &=& \dfrac{9}{8}\end{array}