Lösung.

Mittels $ \mbox{$u = (x + c)/d$}$ erhalten wir

$ \mbox{$\displaystyle \begin{array}{rcl} \displaystyle\int {\displaystyle\frac... ...isplaystyle\frac{b}{d}} \arctan ((x + c)/d) + {\mbox{const.}}\\ \end{array}$}$