TeX Quellcode:

\begin{array}{rclcl}\log_{\pi}(37x) &=& 14\log_{\pi}(e) &\vert& \text{3. Logarithmengesetz}\\\log_{\pi}(37x) &=& \log_{\pi}(e^{14}) &\vert& \pi^*\\37x &=& e^{14} &\vert& :37\\x &=& \dfrac{e^{14}}{37} \approx 32.502{,}82 \in \mathbb{D} \\\\\mathbb{L} &=& \left\{\dfrac{e^{14}}{37}\right\}\end{array}