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Fisher's Rule: Number every equation, every time. Occam's Rule: Number only those equations which are referred back to. Fisher-Occam Rule: Number those equations which might be referred back to.

In the toolbar, then choose Equation. You can also choose Insert > Equation (from the Insert menu at the top of your screen). Enter an equation in the field using LaTeX commands or MathML elements.

Mathematical modes The inline mode uses one of the delimiters: \ ( \), $ $ or \begin{math} \end{math} and the display mode has two versions: numbered and unnumbered. To print equations in display mode one these delimiters are used: \[ \], $$ $$, \begin{displaymath} \end{displaymath} or \begin{equation} \end{equation}.

Equations are centered on the page and labeled with Arabic numerals, right-aligned, in parentheses, and referred to only by those numbers in the text ? e.g., you should always say ?as seen in (3)? rather than ?as seen in Equation (3)?.

For proper formatting, keep the equation left-aligned; indent by a half-inch; and after the equation, enter the relevant reference number, enclosed in parentheses, close to the right-hand margin. Use the tab key to achieve proper alignment.

To format math expressions you can must enclose the math in '$' from each side. So, in order to write something like this: x2+2, I had to write $x^2 + 2$. As you can probably tell from the example the superscript/upper index/exponent you can write using this '^' sign. The subscript uses '_'.

How can I format mathematics here? Inline formulas are surrounded by single dollar signs. For example, $f(x) = ax^2 + bx + c$ renders as f(x)=ax2+bx+c. Block formulas are surrounded by double dollar signs. For example, $$x = \frac{-b \pm \sqrt{b^2 - 4ac} }{2a}$$ renders, on a separate line, as x=?b±?b2?4ac2a.

There are two basic types of formula: Inline formulas are surrounded by single dollar signs. For example, $f(x) = ax^2 + bx + c$ renders as f(x)=ax2+bx+c. Block formulas are surrounded by double dollar signs. For example, $$x = \frac{-b \pm \sqrt{b^2 - 4ac} }{2a}$$ renders, on a separate line, as x=?b±?b2?4ac2a.