3.19.1 Top new questions this week

3.19.1.1 For a better animation of the solution from NDSolve

http://mathematica.stackexchange.com/questions/130502/for-a-better-animation-of-the-solution-from-ndsolve

 
I obtained a numerical solution from the following code with NDSolve 
 
L = 20; 
tmax = 27; 
\[Sigma] = 2; 
myfun = First[h /. NDSolve[{D[h[x, y, t], t] + 
Div[h[x, y, t]^3*Grad[Laplacian[h[x, y, t], {x,  ...
 

- asked by jsxs (12 votes), answered by Nasser (14 votes)

3.19.1.2 A puzzling result of "FullSimplify"

http://mathematica.stackexchange.com/questions/130606/a-puzzling-result-of-fullsimplify

 
When I input: 
 
FullSimplify[(1 - a^2)/b^2, a^2 + b^2 == 1] 
 
 
the result is the ideal answer 1 
 
Howeverif I input: 
 
FullSimplify[(1 - b^2)/a^2, a^2 + b^2 == 1] 
 
 
the result is (1 - b^2)/a^2  ...
 

- asked by dabuyang (11 votes), answered by Bob Hanlon (7 votes)

3.19.1.3 ImageFeatureTrack or ImageDisplacements to measure average object velocities in images

http://mathematica.stackexchange.com/questions/130391/imagefeaturetrack-or-imagedisplacements-to-measure-average-object-velocities-in

 
I have as example a set of 30 gray scale images (8bit, 568*478 pixels, they are avalable here:http://tinyurl.com/zckyv9w) where bright objects on dark background move from image to image mainly  ...
 

- asked by mrz (9 votes), answered by Simon Woods (10 votes)

3.19.1.4 Documentation Tools: Don't put web URL in user package docs

http://mathematica.stackexchange.com/questions/130515/documentation-tools-dont-put-web-url-in-user-package-docs

 
I am exploring the Workbench documentation tools for the first time and one of the difficulties I encountered was that every generated (compiled) documentation page includes weblinks.  These point to  ...
 

- asked by Szabolcs 9votes

3.19.1.5 How to make plots 'blacker'?

http://mathematica.stackexchange.com/questions/130471/how-to-make-plots-blacker

 
I need to make a contour plot for publication, but even if I set ContourStyle->Black, the 'black' plots and the axes are very faint. When I export the figure in svg and open it in some  ...
 

- asked by Physicist (9 votes), answered by Michael E2 (10 votes)

3.19.1.6 How to specify algebraic relations between objects?

http://mathematica.stackexchange.com/questions/130258/how-to-specify-algebraic-relations-between-objects

 
so I'm wanting to screw around a bit with Geometric Algebra in Mathematica. To start, I want to create some basis objects: $e_1,~ e_2,~e_3$ and then specify the relations between them which are 
$$ 
...
 

- asked by Mason (9 votes), answered by march (9 votes)

3.19.1.7 Crack it If you Can? BUT in the BEST way ^^

http://mathematica.stackexchange.com/questions/130566/crack-it-if-you-can-but-in-the-best-way

 
From the Wolfram Community: 
 
Hello everyone, 
 
A little while ago I was asked to solve this "safe cracker" puzzle, a sweet example of a coffee table puzzle. The basic gist of this puzzle is that it  ...
 

- asked by Youphyso (8 votes), answered by george2079 (4 votes)