Reputation
Next tag badge:
98/100 score
25/20 answers
Badges
9 117 264
Newest
 Nice Answer
Impact
~844k people reached

Mar
13
comment DSolve giving strange error messages solving a PDE
I wonder what form has that f in the "general" solution ... Can you share some info about it?
Mar
13
comment How can I compare two iteration results and define error?
Some code here mathfaculty.fullerton.edu/mathews//n2003/MullersMethodMod.html
Mar
13
revised How can I compare two iteration results and define error?
added 62 characters in body
Mar
13
comment How can I change this function for the better?
But you already know how to search the internet.... This question is a dup.
Mar
12
comment mixing color of individual parts of a function in DensityPlot
I expected a gray scale from black to white for f[x_, y_] := {Sin[x], Sin@x, Sin@x}. It seems I have scaling issues.
Mar
12
reviewed Close Function to find minimum element in array
Mar
12
comment mixing color of individual parts of a function in DensityPlot
@DavidG.Stork mathematica does not inject the coordinates into the ColorFunction. Only the function value, and that is not enough for what the OP wants to achieve
Mar
12
reviewed Close Exporting pdf with a precise page dimension in metric units, rather than printer points
Mar
12
reviewed Close Can I name a variable as D(1,0,+1/2)?
Mar
12
comment Can I name a variable as D(1,0,+1/2)?
You're looking for trouble.
Mar
12
comment Can I name a variable as D(1,0,+1/2)?
Welcome to Mathematica.SE! I suggest the following: 0) Browse the common pitfalls question 1) As you receive help, try to give it too, by answering questions in your area of expertise. 2) Read the faq! 3) When you see good questions and answers, vote them up by clicking the gray triangles, because the credibility of the system is based on the reputation gained by users sharing their knowledge. Also, please remember to accept the answer, if any, that solves your problem, by clicking the checkmark sign!
Mar
12
reviewed Close 3D Plot for Attractive and Repuslive Field Functions
Mar
12
revised Matrix of boundary distance between countries
added 1025 characters in body
Mar
12
comment Matrix of boundary distance between countries
@ivanmp Each separate territory in a country (for example an island) gives you a polygon in CountryData["xxx", "Coordinates"]. In my example I considered only one polygon for each country to abbreviate the list mapping coding and make the idea easier to follow
Mar
12
reviewed Close Finding the equation of tangent lines where a function has a specified slope
Mar
12
comment Generating Z^*_n
Select[Range[21], NumericQ@MultiplicativeOrder[21, #] &]
Mar
12
comment Generating Z^*_n
Position[MultiplicativeOrder[21, #] & /@ Range@20, _?IntegerQ, 1]
Mar
11
comment Calculating eigenvalues of a large matrix takes a long time
Your matrix hasn't the form you are describing. Try m//MatrixForm
Mar
11
revised Calculating eigenvalues of a large matrix takes a long time
added 16 characters in body
Mar
11
comment ParallelMap not using all of the available kernels
Have you tried the same things with another (smaller) parallelizable load?