7.29.2 Greatest hits from previous weeks

7.29.2.1 Show equation number only once in align environment
7.29.2.2 How to use \multirow
7.29.2.3 How to write partial differential equation (Ex. dQ/dt=ds/dt) with real partial derivative signs?
7.29.2.4 Nice scientific pictures show off
7.29.2.5 Change line spacing inside the document
7.29.2.6 What are all the font styles I can use in math mode?
7.29.2.7 Write pseudo code in latex
7.29.2.1 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 219 votes
7.29.2.2 How to use \multirow

https://tex.stackexchange.com/landing/r/digest?cta=question&id=73283

I can compile this table separately but when I want to compile the whole file, it gives me an error, which is fixed by removing \multirow. 
\usepackage{multirow} 
\begin{table}[htbp] 
\begin{center} 
\... 
[tables] [multirow]
 
asked by anna https://tex.stackexchange.com/landing/r/digest?cta=user&id=18922 109 votes
answered by Gonzalo Medina https://tex.stackexchange.com/landing/r/digest?cta=user&id=3954 173 votes
7.29.2.3 How to write partial differential equation (Ex. dQ/dt=ds/dt) with real partial derivative signs?

https://tex.stackexchange.com/landing/r/digest?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/digest?cta=user&id=71265 107 votes
answered by Benjamin McKay https://tex.stackexchange.com/landing/r/digest?cta=user&id=19327 6 votes
7.29.2.4 Nice scientific pictures show off

https://tex.stackexchange.com/landing/r/digest?cta=question&id=158668

Task 
Show off your best scientific illustration ! 
The main purpose of this question is to share beautiful scientific pictures, preferably with an educational aspect. 
Content 
Your post must ... 
[diagrams] [3d] [technical-drawing] [fun] [big-list]
 
asked by Thomas https://tex.stackexchange.com/landing/r/digest?cta=user&id=42660 533 votes
answered by Charles Staats https://tex.stackexchange.com/landing/r/digest?cta=user&id=484 323 votes
7.29.2.5 Change line spacing inside the document

https://tex.stackexchange.com/landing/r/digest?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/digest?cta=user&id=16097 138 votes
7.29.2.6 What are all the font styles I can use in math mode?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=58098

As can be seen in above picture, there are lots of fonts or font styles that can be used in math mode. 
What are all the fonts or font styles I can use in math mode, and which packages are required in ... 
[fonts] [math-mode] [big-list] [latin-modern] [computer-modern]
 
asked by doncherry https://tex.stackexchange.com/landing/r/digest?cta=user&id=4012 492 votes
answered by Christian https://tex.stackexchange.com/landing/r/digest?cta=user&id=13450 641 votes
7.29.2.7 Write pseudo code in latex

https://tex.stackexchange.com/landing/r/digest?cta=question&id=163768

I am trying to write pseudo code in my paper. Here is the snippet and image like what I want.  Can some one please help me to format it. 
\begin{algorithm} 
\caption{Euclida^\200\231s algorithm}\label{euclid} 
\... 
[algorithms]
 
asked by cyclic https://tex.stackexchange.com/landing/r/digest?cta=user&id=47334 119 votes
answered by karlkoeller https://tex.stackexchange.com/landing/r/digest?cta=user&id=27635 165 votes