# User Portlet

Luis Ledesma
Discussions
Jim thank you very much. I actually refreshed and after changing the code it worked. Also appreciate the Mathematica code that works too!
I guess so :-) !
You can do this using D[]. Given a function with (say) arguments x and y you can write: D[f[x,y], {{x,y},2}] You can use Grad[] twice, of course, but D[] will get you there directly. Some background info here: ...
If one sets out to admit only in-place permutations (i.e. the range of permutating characters in string s1 is the same range as in string s2) to lower the 2 t by 1 (if there are more ranges of that type in the arguments given to detect[], 1 is...
I've tried to implement Breadth First Search algorithm in MMA, to attempt to solve the 8-puzzle game. But in some cases, I ran out of memory, but on other cases it solves without problem. Here is the code I am using to make BFS, in the case of...
I am in doubt about whether my procedure to solve an exercise of the book GRAPHICS with MATHEMATICA, FRACTALS, JULIA SETS, PATTERNS and NATURAL FORMS of the authors CHONAT GETZ and JANET HELMSTEDT,has been correct, because unfortunately the authors...
Hello everyone, after the invitation I received from a friend, to try to program the playfair cipher in mathematica, I started looking for information about it because the one that he provided was not enough. My first place to look was...
Hi Eric At first glance I have not found where the fault is in your code, I did it a moment ago and got good results, please see the image below. ![resuelto][1] I could not reproduce the results that you show and it would be better if you...
It's good to mention that this question has been cross posted to Mathematica.SE and answered there: - https://mathematica.stackexchange.com/q/154213/12
Obviously the new triangles are not complanar with the plane of the very first triangle. Therefore you look *through*. If you could convince yourself to ease things as much as possible you would - first transform your very first triangle into a...