TeX Quellcode:

\begin{array}{rclllll} f\left( -\dfrac{2}{5} \right) &=& 10 \ln \left(\left(-\dfrac{2}{5}\right)^2-4\cdot \left(-\dfrac{2}{5}\right)+4\right)-10 &=& 10\ln \left(\left(\dfrac{12}{5}\right)^2\right)-10 &=& 20\ln \left( \dfrac{12}{5}\right)-10 \quad \rightarrow \quad P_1\left(-\dfrac{2}{5} \mid 20 \ln \left(\dfrac{12}{5}\right)-10\right)\end{array}