4.9.2 Greatest hits from previous weeks

4.9.2.1 \subtitle doesn't work in article document class

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=5948

I'm relatively new to TeX but until now I used mostly the beamer class. There I did this: 
\documentclass{beamer} 
\title{title} 
\subtitle{subtitle} 
\author{name} 
\date{\today} 
\begin{document} 
... 
[titles] [document-classes] [article]
 

asked by nickik https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=2132 109 votes

4.9.2.2 Using \footnote in a figure's \caption

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=10181

Maybe this is an easy one, but I struggled with this now too long :) 
I want to have a footnote in a caption of a figure, see the example. 
\begin{figure}[!ht] 
\caption{a figure  ... 
[floats] [footnotes] [captions]
 

asked by Matten https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=1125 171 votes

answered by Herbert https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=2478 110 votes

4.9.2.3 Matrix in Latex

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=204621

I am new to Latex, and I have been trying to get the matrix of following form 
[x11 x12 x13 . . . . x1n 
x21 x22 x23 . . . . x2n 
. 
. 
. 
. 
xd1 xd2 xd3 . . . . xdn] 
... 
[matrices]
 

asked by Lakshmi Narayanan https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=63361 70 votes

answered by skpblack https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=42912 114 votes

4.9.2.4 How to add todo notes?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=9796

Is there a simple way to add todo notes to LaTeX documents ? 
I would like to have these notes in red in the generated pdf and a simple syntax to write them. 
[todonotes]
 

asked by aneuryzm https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=3182 182 votes

answered by Seamus https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=215 139 votes

4.9.2.5 How can I get bold math symbols?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=595

To make Latin-letter variables bold I can use e.g. \mathbf{a}, but while putting Greek letters or symbols such as \nabla inside \mathbf doesn't cause any errors or warnings, it also doesn't do  ... 
[fonts] [math-mode] [symbols] [bold]
 

asked by Michael Underwood https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=32 315 votes

answered by Mark Meckes https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=206 266 votes

4.9.2.6 Is there any way to do a correct word count of a LaTeX document?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=534

Often assignments (or even papers) have a word count limit. That is not a big deal when using Word, but I don't know how to do that using LaTeX. My solution has been so far to compile the document and  ... 
[packages] [compiling] [word-count] [scripts]
 

asked by Vivi https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=14 297 votes

answered by ShreevatsaR https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=48 158 votes

4.9.2.7 Subfigures side by side with captions

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=119984

I am using the following code to put my two figures side by side with different captions, 
\begin{figure*}[t!] 
\centering 
\begin{subfigure}[b]{0.5\textwidth} 
\centering 
... 
[captions] [subfloats]
                                                                                  

                                                                                  
 

asked by Sait https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=14611 57 votes

answered by Luan Resende https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=25372 76 votes