6.3.3 Can you answer these questions?

6.3.3.1 With a Large output, clicking Show all or Show more freezes Mathematica

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=219430

Running the following code takes about 30 min on my laptop (everything before the Reduce is instant) and produces a Large output that Mathematica does not display, only shows buttons Show more, Show  ... 
[output] [crash]
 

asked by Sander Heinsalu https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=6211 1 vote

6.3.3.2 MathMF Error, Can't Import VIdeo

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=219195

 
 
I am getting this error HElP.... 
 
[video]
                                                                                  

                                                                                  
 

asked by Ajit Yadav https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=71840 1 vote

6.3.3.3 Best parameter for smoothing splines

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=219616

I am trying to implement a module to determine the best value for the smoothing parameter of a smoothing spline interpolation of a given dataset. To calculate the cross-validation score of a given  ... 
[fitting] [splines]
 

asked by Daniele Binosi https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=25023 1 vote