equationsmath-operatorsmathtools
I would like to write the following equations in LaTeX:
and
The first one (with the integrals) I managed to make similarly using the following code:
\begin{equation}
COG = \frac{\int_a^b\!ua(x)x\, \mathrm{d}x}{\int_a^b\!ua(x)\, \mathrm{d}x}
\label{eq:cogCont}
\end{equation}
However, I am using a u instead of a μ and have no idea how to do it another way, as well, I do not know how to make the "A" next to it.
For the second equation, I have no idea where to start.
Any ideas?
Thanks!
I see in your example that you are using eqnarray. This is well-known to be seriously defective, and a number of tools simply do not support it. I see that eqnarray does not show up in the mathtools manual, so I suspect the omission may not be accidental! Use the gather or align environments, as shown in the mathtools manual.
For more detail on the problems of eqnarray see the UK FAQ.
Since you want a cheat sheet, I'd recommend the extract package. With a slightly different MWE:
\documentclass{article}
\usepackage[
active,
header=false,
copydocumentclass=true,
generate=\jobname-Cheatsheet,
extract-env={equation},
extract-cmdline={synopsis},
]{extract} % http://ctan.org/pkg/extract
\begin{extract*}
% Items executed in both the main and extracted document
% (extract manual, section 5.1)
\usepackage{amsmath}
\end{extract*}
\begin{extract}
% Items executed only in extracted document
\def\synopsis#1{#1}
\end{extract}
\def\synopsis#1{}
\begin{document}
First Euler observed that
\synopsis{Euler's equation tying together the five fundamental constants of mathematics}%
\begin{equation}
1 + e^{i \Pi} = 0.
\end{equation}
Then, Gauss discovered the normal distribution:
\synopsis{Normal distribution}%
\begin{equation}
P(x) = \frac{1}{{\sigma \sqrt {2\pi } }}e^{{{ - \left( {x - \mu } \right)^2 } \mathord{\left/ {\vphantom {{ - \left( {x - \mu } \right)^2 } {2\sigma ^2 }}} \right. \kern-\nulldelimiterspace} {2\sigma ^2 }}}
\end{equation}
Finally, Einstein proclaimed:
\synopsis{Equivalence of mass and energy}%
\begin{equation}
E = m C^2
\end{equation}
\end{document}
you get an original document of:
and an extracted document of:
\documentclass{article}
% Items executed in both the main and extracted document
% (extract manual, section 5.1)
\usepackage{amsmath}
% Items executed only in extracted document
\def\synopsis#1{#1}
\begin{document}
\synopsis{Euler's equation tying together the five fundamental constants of mathematics}%
\begin{equation}
1 + e^{i \Pi} = 0.
\end{equation}
\synopsis{Normal distribution}%
\begin{equation}
P(x) = \frac{1}{{\sigma \sqrt {2\pi } }}e^{{{ - \left( {x - \mu } \right)^2 } \mathord{\left/ {\vphantom {{ - \left( {x - \mu } \right)^2 } {2\sigma ^2 }}} \right. \kern-\nulldelimiterspace} {2\sigma ^2 }}}
\end{equation}
\synopsis{Equivalence of mass and energy}%
\begin{equation}
E = m C^2
\end{equation}
\end{document}
and:
This also works with your original \caption command.
Best Answer
An exemplary solution. The second label commented.