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7h
awarded  Nice Answer
15h
revised How to define an exclusion zone for NDSolve
edited body
15h
comment How to define an exclusion zone for NDSolve
For starters, it seems to me that the Sqrt's are superfluous. BTW note the existence of SquaredEuclideanDistance and EuclideanDistance
15h
comment Why is Random faster than RandomReal?
If you need the random numbers one at a time, can't you just generate a few million of them in one call (RandomReal[{0, 1}, {10^8}]) and index this list during your iterative process?
17h
comment Using NDSolve to find particle trajectory
@drN Good point. I elaborated the answer somewhat.
17h
revised Using NDSolve to find particle trajectory
added 383 characters in body
17h
answered Using NDSolve to find particle trajectory
2d
reviewed Reviewed Using different colors in TreeForm?
2d
awarded  Nice Answer
2d
comment Symbolic vs numerical integration
@Farhad use the Insert Graphics button or use the Mathematica upload tool
2d
reviewed Close How to represent one variable in terms of others in a system of equations?
2d
reviewed Close intermediate steps of simplification of algebraic expression without evaluation
Feb
5
comment How to generate a random flow graph?
@belisarius it doesn't seem to answer the follow-up question that was added later (and which I didn't notice until now).
Feb
4
comment Export a .NOFF file without color information
The NOFF help page says it will output CNOF is color information present. What happens if you export something like SphericalPlot3D[ 1 + Sin[4 \[Phi]]/2, {\[Theta], 0, Pi}, {\[Phi], 0, 2 Pi}, Lighting -> "Neutral", Mesh -> False, Axes -> False, Boxed -> False] /. RGBColor[__] -> Sequence[]?
Feb
4
comment How to solve this recursive system?
Not that it helps with your problem but I'd like to point out that you have used a few reserved keywords as variables in your code (E and D). In order to prevent conflicts you better refrain from using variables with an initial uppercase character.
Feb
4
comment Need Help with solve function
You're welcome. Note that IE11 seems to have problems with the add-in.
Feb
4
revised Need Help with solve function
deleted 14 characters in body
Feb
4
comment Need Help with solve function
meta.mathematica.stackexchange.com/questions/1043/…
Feb
4
comment Need Help with solve function
And now the square brackets...
Feb
4
comment Need Help with solve function
You also forgot to write sqrt(t) as Sqrt[t].