2.11.3 Can you answer these questions?

2.11.3.1 Placing a comma before a citation-related superscript number
2.11.3.2 3D quiver plots and 2D contour plots from numerical data
2.11.3.3 Draw a matrix with Latex

Can you answer these?

2.11.3.1 Placing a comma before a citation-related superscript number

http://tex.stackexchange.com/questions/299558/placing-a-comma-before-a-citation-related-superscript-number

According to the Chicago Manual of Style (section 14.21) "a note number should generally be placed at the end of a sentence or at the end of a clause. The number normally follows a quotation (whether  ...
 
- asked by betabandido 3votes
2.11.3.2 3D quiver plots and 2D contour plots from numerical data

http://tex.stackexchange.com/questions/300041/3d-quiver-plots-and-2d-contour-plots-from-numerical-data

I want to visualize a 3D vector field on a 2D disk (actually the cross-section of a torus), once as a 3D quiver plot (disk in 3D perspective with arrows originating from it) and once as one 2D contour  ...
                                                                                  

                                                                                  
 
- asked by pazathoth 2votes
2.11.3.3 Draw a matrix with Latex

http://tex.stackexchange.com/questions/299685/draw-a-matrix-with-latex

I did a matrix with Latex, but I do not know how how to do the colored square. 
Any idea please? 
Thank you 
\documentclass{article} 
\usepackage[table]{xcolor} 
\usepackage{collcell} 
...
 
- asked by Fish 2votes