TeX Quellcode:

\begin{array}{rclcl}4x^{\frac{7}{8}} &>& 0 &\vert & :4 \\\sqrt[8]{x^7} &>& 0 &\vert & ()^8 \\x^7 &>& 0 &\vert & \sqrt[7]{}\\x &>& 0 \\\\\end{array}