\(f(x)=\frac {x\,-\,3} {|x\,+\,1|} \)101
\(\scriptsize\begin{matrix}f\; : &\!\!\! & \mathbb{R\to \mathbb{R}} \\
\forall \, x > 1 :&\!\!\! & x\mapsto 3 \\
\forall \, x < 1 :&\!\!\! & \; x\mapsto -2\\\end{matrix}\)102
meerv.voorschrift103
\(\scriptsize \begin{matrix}f: &\!\!\!\!&\mathbb{R\to \mathbb{R}} \\
\forall \,x > 3 :&\!\!\!\!& x\mapsto 1 \\
\forall \,x < 2 :&\!\!\!\!& x\mapsto 4 \\\end{matrix} \)104
\(\scriptsize\begin{matrix}\quad \; f: & & \mathbb{R\to \mathbb{R}} \\
\forall x > 1 &\!:\!&x\mapsto 2 \\
\forall x < 1 &\!:\!&x\mapsto -x \\\end{matrix} \)105
\(f(x)=\frac{x\,-\,5}{|x\,+\,2|}\)106
\(f(x)=\frac{2x}{x\,-\,|x|}\)107
\(f(x)=-\frac{2x}{|x|}-x\)108
\(\scriptsize f(x)=\begin{cases} x+1&\text{als } x\ge 1 \\ -1& \text{als } x < 1 \end{cases} \)109
\(f(x)=\sqrt{4-|x+4|}\)