6.61.2 Greatest hits from previous weeks

6.61.2.1 Show equation number only once in align environment

https://tex.stackexchange.com/landing/r/digest?cta=question&id=17528

I want the equation number to be shown only at the last line, or better, somewhere in the middle of all. So instead of (1), (2), ... only (1). 
I use \begin{align} ... \end{align} 
[equations] [align]
 

asked by Theta30 https://tex.stackexchange.com/landing/r/digest?cta=user&id=5350 201 votes

answered by Gonzalo Medina https://tex.stackexchange.com/landing/r/digest?cta=user&id=3954 180 votes

6.61.2.2 What is the difference between \dfrac and \frac?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=135389

The title says it all, both \dfrac{a}{b} and \frac{a}{b} make fractions, so what is the difference between the two? 
[math-mode] [amsmath]
 

asked by YYC https://tex.stackexchange.com/landing/r/digest?cta=user&id=37383 129 votes

6.61.2.3 inputenc Error: Unicode char \u8: not set up for use with LaTeX

https://tex.stackexchange.com/landing/r/digest?cta=question&id=83440

This is with ref to my previous question Package clash in multilingual report. 
\documentclass[11pt,table,a4paper]{article} 
\usepackage{lmodern} 
\usepackage[utf8]{inputenc} 
\usepackage[T1]{fontenc} 
\... 
[errors] [unicode] [languages] [cyrillic] [input-encodings]
 

asked by Manish https://tex.stackexchange.com/landing/r/digest?cta=user&id=19116 116 votes

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 88 votes

6.61.2.4 Scale image to page width?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=39147

I use 
\inclugraphics[scale=TRYING TO GUESS THE NUMBER FOR PAGE WIDTH]{...} 
but I find this errorsome, is there some ready flag to set the image to page width? I usually use PNG and JPG photos. 
[graphics] [scaling]
 

asked by hhh https://tex.stackexchange.com/landing/r/digest?cta=user&id=2956 226 votes

answered by Werner https://tex.stackexchange.com/landing/r/digest?cta=user&id=5764 222 votes

6.61.2.5 How to force a table into page width?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=10535

I have the following table: 
\begin{table}[htb] 
\begin{tikzpicture} 
\node (table) [inner sep=0pt] { 
\begin{tabular}{ l | l } 
{\bf Symptom} & {\bf Metric} \\ 
\hline 
Class that has many accessor ... 
[tables] [margins]
 

asked by RoflcoptrException https://tex.stackexchange.com/landing/r/digest?cta=user&id=3316 234 votes

answered by Martin Scharrer https://tex.stackexchange.com/landing/r/digest?cta=user&id=2975 198 votes

6.61.2.6 Underscores in words (text)

https://tex.stackexchange.com/landing/r/digest?cta=question&id=48632

How can I produce the text Word_one_two in LaTeX? 
I tried: 
Samp\_Dist\_Corr 
But, it doesn't quite look right. Also, I want it in the typewriter font, so actually, I'm doing: 
\texttt{Samp\_Dist\... 
[characters] [typewriter]
 

asked by Flux Capacitor https://tex.stackexchange.com/landing/r/digest?cta=user&id=11728 186 votes

answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 162 votes

6.61.2.7 Multi-line (block) comments in LaTeX

https://tex.stackexchange.com/landing/r/digest?cta=question&id=87303

In LaTeX, % can be used for single-line comments. For multi-line comments, the following command is available in the verbatim package. 
\begin{comment} 
Commented code 
\end{comment} 
But is there a ... 
[comments]
 

asked by Arindam Pal https://tex.stackexchange.com/landing/r/digest?cta=user&id=17379 227 votes

answered by guillem https://tex.stackexchange.com/landing/r/digest?cta=user&id=3941 181 votes