cancel - Mathjax — ContextQMD

.. _tex-cancel:

cancel

The cancel extension implements the cancel package from LaTeX, which provides a means of "crossing out" sub-expressions in various ways. See the cancel CTAN page <https://www.ctan.org/pkg/bbm>__ for more information and documentation. See also the :ref:tex-enclose extension for some alternative approaches to crossing out sub-expressions.

This package defines the following macros:

.. describe:: \cancel{math}

Strikeout ``math`` from lower left to upper right.

.. describe:: \bcancel{math}

Strikeout ``math`` from upper left to lower right.

.. describe:: \xcancel{math}

Strikeout ``math`` with an "X".

.. describe:: \cancelto{value}{math}

Strikeout ``math`` with an arrow going to ``value``.

.. raw:: html

<p>Some examples are as follow:</p>
<p style="background-color: #DDD; padding: 1em 0; text-align: center">
<iframe style='width: 15em; height: 6em; background-color: white' srcdoc='
  <!DOCTYPE html>
  <html>
  <head>
  <title>MathJax cancel Examples</title>
  <script>
  MathJax = {
    loader: {load: ["[tex]/cancel"]},
    tex: {packages: {"[+]": ["cancel"]}}
  }
  </script>
  <script defer src="https://cdn.jsdelivr.net/npm/mathjax@4/tex-chtml.js">
  </script>
  </head>
  <body>
  $$\begin{array}{cc}
  \cancel{x+1} & \bcancel{x+1}\\
  \xcancel{x+1} & \cancelto{0}{x+1}
  \end{array}$$
  </body>
  </html>
'></iframe>
</p>

This extension is loaded automatically when the :ref:tex-autoload extension is used. To load the cancel extension explicitly, add '[tex]/cancel' to the :data:load array of the :data:loader block of your MathJax configuration, and add 'cancel' to the :data:packages array of the :data:tex block.

.. code-block:: javascript

window.MathJax = { loader: {load: ['[tex]/cancel']}, tex: {packages: {'[+]': ['cancel']}} };

Alternatively, use \require{cancel} in a TeX expression to load it dynamically from within the math on the page, if the :ref:tex-require extension is loaded.

.. _tex-cancel-commands:

cancel Commands

The cancel extension implements the following macros: \bcancel, \cancel, \cancelto, \xcancel

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