TeX Quellcode:

\begin{array}{rcl} \mathbb{D} &=& \mathbb{R}^+ \cr\cr f(x) &=& x^{-\frac{1}{2}} \cr \cr \cr F(x) &=& \dfrac{1}{-\frac{1}{2}+1}x^{-\frac{1}{2}+1}+c \cr \cr &=& 2x^\frac{1}{2}+c \cr \cr &=& 2\sqrt{x}+c \end{array}