mirror of
https://github.com/TeachBooks/manual.git
synced 2026-11-12 22:35:51 +00:00
49 lines
No EOL
1.7 KiB
Markdown
49 lines
No EOL
1.7 KiB
Markdown
# Equations
|
|
|
|
Equations can be included in two ways: inline or display mode.
|
|
|
|
To make an inline equation, just put the LaTeX equation between \$-signs. For example, `$F = m \cdot a$` produces: $F = m \cdot a$.
|
|
|
|
Display mode equations (the ones that take up a whole line), can be inserted using double \$-signs, like this:
|
|
|
|
$$
|
|
F = m \cdot a
|
|
$$
|
|
|
|
which will produce:
|
|
|
|
$$
|
|
F = m \cdot a
|
|
$$
|
|
|
|
```{tip}
|
|
The scientific rules dictate that quantities ($F$, $m$, $a$ etc.) should be printed in italics. Units, however, should not! One can use `\text{m}` in an equation to comply to this rule:
|
|
|
|
$$ F = m \cdot a = 10 \cdot 9.81 = 98 \text{N}$$
|
|
|
|
```
|
|
|
|
> **Warning**
|
|
>
|
|
> Make sure there is a blank line *before* the display mode equations, otherwise it will render as inline and display the outer set of $$$ symbols. Also, the Euro symbol is not included in MathJax (see note below) and must be specified using `\unicode{0x20AC}` (note that it displays incorrectly in some Markdown renderers like VS Code).
|
|
|
|
To number the equations and refer in text, you need to provide a label to the equation. Just put the label between brackets and place it after the last \$\$, like this:
|
|
|
|
```md
|
|
$$
|
|
F = m \cdot a
|
|
$$ (newtons_second_law)
|
|
```
|
|
|
|
Resulting in:
|
|
|
|
$$
|
|
F = m \cdot a
|
|
$$ (show_newtons_second_law)
|
|
|
|
Equation {eq}`show_newtons_second_law` can now be referred to.
|
|
|
|
> **Note**
|
|
>
|
|
> The TeachBook uses MathJax to display equations, which provides some LaTeX-like functionality, but not all! For example, the Euro symbol is missing, and packages like `siunitx` are not available (hint, use `\textrm{}` and `\textrm{}`). When something is not working, it's useful to search for MathJax-specific solutions (hint, include "mathjax" in your Google search).
|
|
> |