10.39.3 Can you answer these questions?

10.39.3.1 Using DiscretePlot3D, why are the edges of 3D bars distorted?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=308879

Using DiscretePlot3D,why the edge of 3d Bars plotted are disordered? 
I am so confusing . 
You can see that at the top of the columns, the lines at the edges are distorted, which looks very unpleasant 
<... 
[plotting]
 

asked by CatPhotonics https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=104118 Score of 1

10.39.3.2 Training a neural network on two dataset simultaneously

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=308796

I have my neural network model and want to train it at the same time on 2 datasets that share the same structure. What I have done so far does not work. 
This is my code 
... 
[list-manipulation] [machine-learning]
 

asked by Ruth Lazkoz https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=60972 Score of 1

answered by Lexington1776 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=87913 Score of 0

10.39.3.3 How to simplify an expression involving `Sin[k Arg[z]]` with an integer k

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=308906

Consider the following: 
 $Assumuptions = k \[Element] Integers; 
Sin[k Arg[-Conjugate[z]]] - Sin[k Arg[z]] 
 
According to my calculations, if $z =|z| e^{i \phi}$, ... 
[simplifying-expressions] [complex]
 

asked by Doron Behar https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70439 Score of 1