TeX Quellcode:
\begin{array}{rclcll}u_1 = 3^x &=& 1+\sqrt{3} &\vert& \log_3() \\x_1 &=& \log_{3} (1+\sqrt{3})\approx 0{,}9148 \\ \\u_2 = 3^x &=& 1-\sqrt{3} \\\end{array}