6.11.2 Greatest hits from previous weeks

6.11.2.1 How can I save both the plot and the legend together?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=35653

In this example, how can I put the legend inside the graph? Currently, when I save the graph, only the graph is saved, not the legend. 
 
Expr1 = -2 p + 1 
Expr2 = 2 p - 1 
Expr3 = p - 1/2 
Plot[{Expr1,  ... 
[plotting] [legending]
 

asked by Mika Ike https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=6543 41 votes

answered by C. E. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=731 35 votes

6.11.2.2 Formatting legend text font

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=3433

I am using this code to plot a graph, and I am trying to make the font of the legend bigger. 
 
<<PlotLegends` 
ListLogLogPlot[{Sort[moby]}, PlotRange -> Full, Joined -> True, 
... 
[plotting] [legending]
 

asked by Julia https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=525 20 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 25 votes

6.11.2.3 QR Code in shopping cart handle

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=26268

This week, the market people from my work wanted to put QR codes in shopping cart handles, but when they tested it, the QR code did not work. I noted that the cylindrical curvature (even small)  ... 
[image-processing]
 

asked by Murta https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=2266 194 votes

answered by halirutan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=187 190 votes

6.11.2.4 Solving $L=\frac 3  2  \sqrt 4 \pi ^2 A^2+W^2 -\frac \sqrt 5 W \sqrt 4 \pi ^2 A^2+W^2 +6 \pi ^2 A^2+3 W^2   \sqrt 2  +\frac 3 W  2 $ for $W$

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=57763

When I solve the aforementioned equation for $W$ or $A$ on Mathematica I get a long and ugly equation in return, namely one of the solutions for $W$ is: (attempt to read at your own health) 
 
Solve[L  ... 
[equation-solving] [functions] [approximation]
 

asked by J.D'Almbert https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=19257 8 votes

answered by Alexei Boulbitch https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=788 14 votes

6.11.2.5 1 Plot, 2 Scale/Axis

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=627

 
 
I would like to plot those two datasets on top of each other. But they have very different range on the $y$ axis. How can I have two different axis? 
 
I found the following on the help menu but quite  ... 
[plotting] [customization]
 

asked by 500 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=172 145 votes

answered by ArgentoSapiens https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=92 149 votes

6.11.2.6 What are the most common pitfalls awaiting new users?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=18393

As you may already know, Mathematica is a wonderful piece of software. 
However, it has a few characteristics that tend to confuse new (and sometimes not-so-new) users. That can be clearly seen from  ... 
[programming] [core-language] [faq] [guidelines]
 

asked by Dr. belisarius https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=193 462 votes

answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 279 votes

6.11.2.7 How to express trigonometric equation in terms of of given trigonometric function?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=434

How can I express a trigonometric equation / identity in terms of a given trigonometric function? 
 
using following trigonometric identities 
 
Sin[x]^2+Cos[x]^2==1 
Sin[x]/Cos[x]==Tan[x] 
... 
[functions] [trigonometry]
 

asked by Prashant Bhate https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=99 30 votes

answered by Simon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=34 37 votes