7.23.2 Greatest hits from previous weeks

7.23.2.1 What is the difference between \dfrac and \frac?
7.23.2.2 Reduce space between enumerated items
7.23.2.3 Big Parenthesis in an Equation
7.23.2.4 Error in TeX Live a^\200\223 Font ... not loadable: Metric (TFM) file not found
7.23.2.5 Why does \\ not return a new line in an equation?
7.23.2.6 What can I use to typeset MATLAB code in my document?
7.23.2.7 Double line spacing
7.23.2.1 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 138 votes
7.23.2.2 Reduce space between enumerated items

https://tex.stackexchange.com/landing/r/digest?cta=question&id=6081

Background 
All book figures are set to "here definitely" (as they must come after the text that introduces them). 
Problem 
The list types (enumerated and bullet) have too much space between them. ... 
[spacing] [floats] [lists] [vertical-alignment] [positioning]
 
asked by Dave Jarvis https://tex.stackexchange.com/landing/r/digest?cta=user&id=2148 170 votes
answered by lockstep https://tex.stackexchange.com/landing/r/digest?cta=user&id=510 21 votes
7.23.2.3 Big Parenthesis in an Equation

https://tex.stackexchange.com/landing/r/digest?cta=question&id=38868

I have an equation contained inside \[...\], which automatically makes a \sum with sub- and superscripts turn big--so that the summation sign looks awkward inside parenthesis.  Any idea how to make ... 
[math-mode] [delimiters]
 
asked by jamaicanworm https://tex.stackexchange.com/landing/r/digest?cta=user&id=9757 206 votes
answered by qubyte https://tex.stackexchange.com/landing/r/digest?cta=user&id=9043 302 votes
7.23.2.4 Error in TeX Live a^\200\223 Font ... not loadable: Metric (TFM) file not found

https://tex.stackexchange.com/landing/r/digest?cta=question&id=75166

I freshly installed 'basic' version of TeX Live 2012 (not full, only basic version). 
I have following line in my code: 
\usepackage[T1]{fontenc} 
I get following error: 
(/usr/local/texlive/2012/texmf-... 
[fonts] [errors] [packages] [texlive] [font-encodings]
 
asked by abhinavkulkarni https://tex.stackexchange.com/landing/r/digest?cta=user&id=12992 133 votes
answered by mpg https://tex.stackexchange.com/landing/r/digest?cta=user&id=1239 99 votes
7.23.2.5 Why does \\ not return a new line in an equation?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=194236

\begin{equation*}\label{eq:pareto mle2} 
A_0 = \frac{1}{(\alpha+t_x)^{r+s+x}}{}_2F_1\left(r+s+x,x+1;r+s+x+1;\frac{\alpha-\beta}{\alpha + t_x} \right ) "\\\" <br> 
- \frac{1}{(\alpha+T)^{r+s+x}}{}... 
[equations] [line-breaking]
 
asked by user3714137 https://tex.stackexchange.com/landing/r/digest?cta=user&id=60029 87 votes
answered by Mico https://tex.stackexchange.com/landing/r/digest?cta=user&id=5001 44 votes
7.23.2.6 What can I use to typeset MATLAB code in my document?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=75116

This question led to a new package: 
matlab-prettifier 
Does anybody have a quick and easy way to typeset some relatively long MATLAB code in the appendix? I looked up a few methods, and the mcode ... 
[listings] [highlighting] [matlab]
 
asked by suzu https://tex.stackexchange.com/landing/r/digest?cta=user&id=19279 112 votes
answered by Vivi https://tex.stackexchange.com/landing/r/digest?cta=user&id=14 88 votes
7.23.2.7 Double line spacing

https://tex.stackexchange.com/landing/r/digest?cta=question&id=819

I would like to typeset a draft of my document with double linespacing so that my collaborators have space to write in their edits (with a pen).  How do I do it? 
[line-spacing] [setspace]
 
asked by Vebjorn Ljosa https://tex.stackexchange.com/landing/r/digest?cta=user&id=35 218 votes
answered by Stefan Kottwitz https://tex.stackexchange.com/landing/r/digest?cta=user&id=213 161 votes