\[ f(x) = \left\{ \begin{array}{cl} x, & x \le 0 \\ \sin(x), & x > 0 \end{array} \right. \] Abschnittsweise definierte Funktionen task task task task task task task task task task task task task
\[ \alpha \sin (\omega t) + \beta \cos(\omega t) = 1 \] Trigonometrische task task task task task task task task task task task task task