5.22.2 Greatest hits from previous weeks

5.22.2.1 Change line spacing inside the document

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=83855

This is my code 
\documentclass[12pt,a4paper]{book} 
\renewcommand{\baselinestretch}{1.5} 
\begin{document} 
\include{Chapter1} 
\end{document} 
I have please a question: 
I would change the line  ... 
[line-spacing]
 

asked by researcher https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=16097 92 votes

5.22.2.2 How to write partial differential equation (Ex. dQ/dt=ds/dt) with real partial derivative signs?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=225523

I would like to make a partial differential equation by using the following notation: 
dQ/dt 
(without / but with a real numerator and denomenator). Earlier today I got help from this page on how to  ... 
[equations]
 

asked by David https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=71265 66 votes

answered by Benjamin McKay https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=19327 5 votes

5.22.2.3 Problem with compiling BibTex: "no \citation commands" error

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=18045

I'm really new to BibTex, I just wonder what is going wrong when I have this kind of error when I try to compile my bibliography file. 
I found no \citation commands---while reading file  ... 
[bibliographies] [bibtex]
 

asked by zfm https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=3559 64 votes

answered by Spike https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=5150 25 votes

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

https://tex.stackexchange.com/landing/r/newsletter?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/newsletter?cta=user&id=37383 104 votes

5.22.2.5 How to add an extra level of sections with headings below \subsubsection

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=60209

I have a document which requires many levels of sectioning. I have sections, subsections and subsubsections, but require one more level below that. I can't change the sections to be parts and move  ... 
[sectioning] [sections-paragraphs]
 

asked by robintw https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=495 230 votes

answered by Gonzalo Medina https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=3954 199 votes

5.22.2.6 What is the "correct" way of embedding text into math mode?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=3415

Lets say I have something like: 
\[ Let x = number of cats \] 
(This is a contrived example, but pretend we are actually inside a long align environment block...) "Let" and "number of cats" need to  ... 
[math-mode]
 

asked by Billy ONeal https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=192 202 votes

answered by Michael Underwood https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=32 185 votes

5.22.2.7 Crop an inserted image?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=57418

I'm inserting an image with a simple: 
\includegraphics[height=5cm]{filename.png} 
This results in an image that maintains the aspect ratio, and so gives me something like 6cm width. I only really  ... 
[graphics] [crop]
                                                                                  

                                                                                  
 

asked by naught101 https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=13192 184 votes