7.1.1 Top new questions this week

7.1.1.1 Why MMA refuses to simplify the following simple expression?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237547

I have the following simple expression 
 Exp[(Log[1 + x]^2 - Log[x]^2)/Log[1 + 1/x]] - x^2 
 
that can be shown to simplify to  x  for ... 
[simplifying-expressions]
 

asked by user16320 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=16320 13 votes

answered by yarchik https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9469 5 votes

7.1.1.2 Simplifying code that displays a square rolling inside a circle

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237692

The vertex A,B of the square ABCD with side length $\sqrt{2}$ is on the circle with radius $\sqrt{2}$, vertex C,D is inside the circle, roll the square ABCD along the inside of the circle ... 
[graphics] [animation] [code-review]
 

asked by expression https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7339 10 votes

answered by David G. Stork https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9735 0 votes

7.1.1.3 Trying to build a code to translate handwritten formulas using ML

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237533

I'm lazy writing equations in Latex so I want a code to translate handwritten equations. This question is related to an old experiment I'm reviewing during vacations, here. I'm trying to use ... 
[image-processing] [machine-learning]
 

asked by Gluoncito https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=8696 10 votes

7.1.1.4 How to define a function reminding of names of the independent variables?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237458

I am using a function with a lot of variables. There are 9 and sometimes more of them. In this case, it is difficult to memorize, which one stays on the, say, fourth position, and which one - on the ... 
[function-construction] [arguments]
 

asked by Alexei Boulbitch https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=788 8 votes

answered by CA Trevillian https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=63039 2 votes

7.1.1.5 Improve running speed for DeleteDuplicates

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237681

How to make this faster? I want to remove elements that satisfy the condition below but it's way too slow. 
... 
[list-manipulation] [performance-tuning] [filtering]
 

asked by anhnha https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=18805 8 votes

answered by WReach https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=142 10 votes

7.1.1.6 Why does Mathematica try to take the first element of the empty list when plotting?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237785

I'm using Mathematica 12.1.1.0. 
When I enter 
... 
[plotting] [labeling]
 

asked by Jason Gross https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12258 7 votes

answered by Bob Hanlon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9362 3 votes

7.1.1.7 Why do the frame ticks disapear when a plot is exported as PNG?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=237678

I am using  M12.0.0.0 on Ubuntu and I have these two plots: 
... 
[plotting] [export] [ticks]
 

asked by valar morghulis https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=26937 6 votes

answered by Rolf Mertig https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=29 5 votes