8.16.3 Can you answer these questions?

8.16.3.1 How to label lines and adjust ticks in `MultiaxisArrangement`?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=268196

I see we can make multi-axes with  MultiaxisArrangement , but how can we adjust the ticks and how to label the lines in it or how to place plot legends of those lines?... 
[plotting] [labeling] [ticks]
 

asked by Y. zeng https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=80680 Score of 2

8.16.3.2 Empty .png figures generated by a function "PlotWithGrid" whereas no problem with Export function

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=268215

I have an issue about a  .wls  script that I can't manage to solve for the moment. I execute it with  wolframscript  interpeter on ... 
[plotting] [export] [scripting] [wolfram-alpha-queries] [png-format]
                                                                                  

                                                                                  
 

asked by ACat https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=49502 Score of 1

8.16.3.3 Discrepancy in eigenvalues

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=268399

I need to calculate the eigenvalues of a matrix and the parameters are such that there is a large difference (several orders of magnitude) between the entries. Theoretically, the matrix has only one ... 
[numerics] [linear-algebra] [eigenvalues]
 

asked by surrutiaquir https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=81788 Score of 1