I am trying the following code
\begin{equation}
\bm{F}=\bm{F}_{vol}\={\bm{F}}
\end{equation}
But it's some errors. I think the error might be because I cannot use macron in math environment. how can I resolve this?
[Tex/LaTex] How to add \= (“macron”, “overbar”) in an equation?
accentsequationsmath-mode
Related Solutions
As LyX normally loads amsmath automatically if you use one of its environments, I just had to redefine the environment, by adding the following to the preamble:
\renewenvironment{align*}{\align}{\endalign}
Example of result, having added a simple align environment from the LyX menus:
I used the "command forms" \align and \endalign as I think I read somewhere on this site that those are recommended in definitions of environments. Please comment if I'm wrong.
If you still get the error message, try loading amsmath explicitly, by either
- adding
\usepackage{amsmath}the Document --> Settings --> LaTeX preamble, or - going to Document --> Settings --> Math options, unchecking the box by "Use AMS math package automatically" and checking the box below, for "Use AMS math package".
A better option, in my opinion
Instead of redefining align* to align, you can add a keyboard shortcut to add a numbered align. This is done in Tools --> Preferences --> Editing --> Shortcuts (see my answer on Shortcuts for Lemma, Claim, Theorem etc for some more detail, should that be needed). Add a new shortcut, and type
command-sequence math-mode on; math-mutate align;math-number-toggle
as the function. You could for example use Ctrl+Alt+Shift+A as the shortcut, in which case the dialog would look as follows:
Having done this, just hit the specified shortcut, and you have a numbered align environment.
Similarly you can create a keyboard shortcut for a numbered equation. Just replace align with equation in the function above, making it
command-sequence math-mode on; math-mutate equation;math-number-toggle
Ctrl+Alt+Shift+M is free (unless you've defined it yourself), so then only the Alt is the difference between a numbered and an unnumbered. You could of course change these around, making Ctrl+Shift+M create a numbered equation.
I'm not sure I understand what you want but maybe the following is what you are after:
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{equation}
\text{Peso fibra}
= (1{,}266 \times 500)/(\text{m\'edia 3 pesos})
\end{equation}
\end{document}
Best Answer
In general text accent commands uses symbol names:
\=for macron\"for umlaut etc, and math accents (which are logically quite distinct) use words so\barfor an over bar accent, and\ddotfor a double dot accent, etc. In the case of the bar sometimes\overlineworks better (that is not built using the math accent primitives, but is simply a rule drawn over the expression, but unlike\barwhich is a fixed character from the font,\overlineextends as needed to cover the expression.