TeX Quellcode:

\begin{array}{rclcl} \mathbb{D} &=& \mathbb{R} \cr \cr e^{2x+3} &=& 2 \cdot e^x &\vert& \ln() \cr \ln\left(e^{2x+3}\right) &=& \ln\left(2 \cdot e^x\right) &\vert& \text{1. Logarithmengesetz} \cr 2x+3 &=& \ln\left(2\right) + \ln\left(e^x\right) \cr 2x+3 &=& \ln(2)+x &\vert& -x -3 \cr x &=& \ln(2)-3 \approx -2{,}31 \cr \cr \mathbb{L} &=& \left\{\ln(2)-3\right\} \end{array}