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Jun
19
revised How to localize the symbols x,y, A, B in the following program?
fixed code
Jun
18
comment NDSolve :: ndode error while solving an coupled ODEs
when I copy what you just updated, I do not get the same error as you. I get !Mathematica graphics Encountered non-numerical value for a derivative at \[Phi] == 3.141592653589793 I do not understand the notation you are using. What is the little triangle there? Is that meant to be the Laplacian?
Jun
18
comment NDSolve :: ndode error while solving an coupled ODEs
You did not copy the whole cell. Code is missing. !Mathematica graphics also I see [Pi] Did you mean to do this?
Jun
18
comment NDSolve :: ndode error while solving an coupled ODEs
put all the source code in one cell. Then do cell->convert to->input form, then select the cell and right-click and do COPY AS->Plain text, then paste it here.
Jun
18
comment NDSolve :: ndode error while solving an coupled ODEs
would you happen to have the source code for this by any chance? will be easier.
Jun
18
revised RK4 Gravity Simulator
added 448 characters in body
Jun
18
answered RK4 Gravity Simulator
Jun
17
comment For-loop only executes first line in body
Please do not cross post. I answered your question here community.wolfram.com/dashboard it is waste of people time. if you want to cross post, mention in each post where you posted as well, so people do not duplicate things.
Jun
16
comment How to get better quality EPS graphics
fyi, the convert command using level3 eps is this convert file.png eps3:file.eps notice no space between eps3: and file.eps
Jun
16
revised Plot roots of B(z) according to angle small to large
updated plot
Jun
16
revised Plot roots of B(z) according to angle small to large
added 643 characters in body
Jun
16
revised Plot roots of B(z) according to angle small to large
added 643 characters in body
Jun
16
comment Plot roots of B(z) according to angle small to large
Sure. You can sort first. Sorting the numbers by the angle will do it. Posting example...
Jun
16
revised Plot roots of B(z) according to angle small to large
added 444 characters in body
Jun
16
comment Plot roots of B(z) according to angle small to large
So you just want a line added to join the 3 points? ok, will add that. see if this what you mean.
Jun
16
answered Plot roots of B(z) according to angle small to large
Jun
16
comment Inverse Laplace transform
Your answer is correct. Verified it with Maple. Screen shot: !Mathematica graphics the command is: inttrans[invlaplace]( (1- exp(-sqrt(1+s)*x))/(1+s),s,t) assuming positive; note that Maple can do it directly, just needed assumption on x>0
Jun
16
comment How to get better quality EPS graphics
I'd just do as you did. save to png and then use convert to eps (level 3, to get best compression). I do not know of option in M do that. I myself save to png then convert outside.
Jun
16
comment Plot roots of B(z) according to angle small to large
this polynomial Which one? The one on the top or the one in the bottom?
Jun
15
comment Plot graphs with ListPointPlot3D and different colours and size of points
cross posted here community.wolfram.com/groups/-/m/t/276618?p_p_auth=d6m9oI1v