10.17.3 Can you answer these questions?

10.17.3.1 Dot product of every pair of rows of a matrix

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=303610

I have some code to get the cosine of the angle between vectors given by every pair of rows in a large rectangular matrix, 
... 
[performance-tuning] [linear-algebra]
 

asked by apg https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=35029 Score of 1

10.17.3.2 When using FindFit to fit a large dataset with multiple sine functions, a step size error occur

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=303575

My dataset looks like 
 datatandA = Import["dataForQuestionFindFit20240528.csv"]; 
ListPlot[datatandA] 
 
 
and the corresponding FFT spectrum looks like 
... 
[numerics] [fitting]
                                                                                  

                                                                                  
 

asked by so_sure https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=73637 Score of 1

answered by JimB https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=19758 Score of 0

10.17.3.3 ColorScaling only to one axis on Discrete3dPlot?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=303451

I am trying to visualise a probability function in terms of number of trials/number of successes, and I'm using  Discrete3DPlot  to do so. I've figured out how to set ... 
[plotting] [color]
 

asked by Lee Davis-Thalbourne https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=98940 Score of 1