TeX Quellcode:

f(x)= \left\vert x-1 \right\vert +2=\left\{\begin{array}{rllll} x-1+2 &=& x+1 & \text{ für } & x\geq1 \cr-(x-1)+2 &=& -x+3 & \text{ für } & x < 1\end{array} \right.