# Tag Info

4

I suggest you load the mathtools package and use its \newtagform and \usetagform macros to achieve your formatting objective. Specifically, you could (a) use \newtagform to define a "tag" form (aka equation number) called, say, nonums that renders equation numbers invisible, and (b) make use of this tag form via a \usetagform{nonums} directive. To ...

4

Why not simply use the \frac command? \documentclass{article} \begin{document} $$\label{eq2} \underbrace{% \left[\frac{\ddot{x_{cp}}} {\ddot{\psi}}\right]}_{\dot{x} _{4\times 1}}$$ \end{document}

3

Here's a solution with alignat (7columns) and eqparbox. I also loaded the esdiff and esvect packages for a simpler typing of partial differential, and nicer arrow tips: \documentclass{article} \usepackage[b]{esvect} \usepackage{esdiff} \usepackage{eqparbox} \newcommand{\eqmathbox}[2][M] {\eqmakebox[#1]{$\displaystyle#2$}} \usepackage{amsmath} \begin{...

3

Welcome to The TeX.SE. This code, could be a good compromise for you, starting from your code? However exists others best solutions IMHO. \documentclass[a4paper,12pt]{article} \usepackage{amsmath,amssymb} \begin{document} \label{eq2} \arraycolsep=0.7pt\def\arraystretch{1.3}\underbrace{\left[ \begin{array}{c} \ddot{x}_{cp} \\ \hline \ddot{\...

1

As a quick workaround, you may want to turn off numbering of non-referenced equations. If you don't reference equations, it will do the job. One of the possible ways: \usepackage{mathtools} \mathtoolsset{showonlyrefs}

1

I guess you have omitted amsmath in your minimal example. With this package, there is a stricter control on \labels inside a display environment and you need to use the “original” \label inside your enumerate environment. I suggest to define a special environment for this, also exploiting varwidth, so you don't have to guess a suitable width in case the ...

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