7.30.1 Top new questions this week

7.30.1.1 Nice cubic polynomials

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=255217

Let a polynomial with integer coefficients be nice if 
 
this polynomial has distinct integer roots; 
its derivative has also integer roots. 
 
For instance 
$$p(x)=x(x-9)(x-24),\\ 
p'(x)=3(x-4)(x-18)$$ 
is ... 
[equation-solving]
 

asked by yarchik https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9469 14 votes

answered by Michael Seifert https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=27813 14 votes

7.30.1.2 Wolfram Neural Net Repository Questions

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=255328

I am a developer in the machine learning team, and mostly involved with the neural net repository. One of the discussions with my group raised these question in my mind, and these might be stupid ... 
[image-processing] [machine-learning] [neural-networks] [text] [sound]
 

asked by Tuseeta Banerjee https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=81742 11 votes

answered by xslittlegrass https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1364 8 votes

7.30.1.3 Color regions defined by many lines

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=255164

Consider the following code: 
... 
[image-processing] [physics] [geometry]
 

asked by yfs https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=71775 10 votes

answered by Michael Seifert https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=27813 8 votes

7.30.1.4 How can I move around a circle and count the number of points inside it?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=255356

I have the following data: 
... 
[graphics]
 

asked by Eternity https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=81749 7 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 9 votes

7.30.1.5 Fill in the StringBlank

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=255309

I have a string that has blanks marked by a marker; (in this case, an underscore): 
 "f_ath_r". 
 
I can execute the following command to get the word. 
... 
[pattern-matching] [string-manipulation]
 

asked by Syed https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=81355 7 votes

answered by kglr https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=125 9 votes

7.30.1.6 ImplicitRegion does not work in simple case

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=255264

Why doesn't this work:  RegionPlot[ImplicitRegion[1 == 0.2 x + 0.5 y, {x, y}]] , while this, which is almost the same works: ... 
[plotting] [graphics] [backslide]
 

asked by ivan https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=32507 7 votes

answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999 5 votes

7.30.1.7 Flatten simple list

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=255249

I know this is probably a very silly question but I am trying to get {x,y,z,p} to be x,y,z,p. 
For this I am using  Flatten  in this way: 
... 
[list-manipulation]
 

asked by John https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=72940 7 votes

answered by Bob Hanlon https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9362 8 votes