TeX Quellcode:

\begin{array}{rclcl}3x^{-\frac{1}{8}} &>& 0 &\vert & :3 \\\dfrac{1}{\sqrt[8]{x}} &>& 0 &\vert & ()^8 \\\dfrac{1}{x} &>& 0 &\vert & \cdot x^2\\x &>& 0 \\\\\end{array}