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Results tagged with programming
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user 6358
Questions on writing non-trivial programs in Mathematica. Do not use this tag for questions on plotting/graphics or for questions on doing mathematics with Mathematica, where the focus is more on the math than the program.
7
votes
Accepted
Where should global variables be defined in a package?
You could explicitly use Global`b in the definition of MyLagrange:
ClearAll["MyP`*"];
BeginPackage["MyP`"];
MyLagrange;
Begin["`Private`"];
MyLagrange[f_, var_] := Module[{a}, a = D[f, var] + Globa …
- 20.4k
7
votes
Sisyphus Random Walk
Another approach would be to formulate this as a DiscreteMarkovProcess. Since DiscreteMarkovProcess only allows a finite state space, we need to truncate at some large distance xmax. Also note that …
- 20.4k
93
votes
5
answers
15k
views
What does the construct f[x_] := f[x] = ... mean?
This question mentions "x := x = trickery".
What does defining a function as f[x_] := f[x] = ... do and what is it good for?
- 20.4k