The non-negative scalar

\[\begin{equation*} \| \vec{v} \| = \sqrt{\vec{v} \cdot \vec{v}}. \end{equation*} \]

… in the real plane *\(\mathbb{R}^2\)*:

- Draw
*\(\vec{v}\)*as a point*\(P\)*. - Measure the length from the origin to
*\(P\)*.

… in Scheme as

© 2024 Rudolf Adamkovič under GNU General Public License version 3.

Made with Emacs and secret alien technologies of yesteryear.