Questions dealing with optional named arguments of Mathematica functions.
5
votes
0answers
119 views
What Method options does FindInstance accept?
While answering Trouble getting FindInstance to return multiple results for certain constraints it became clear that for this problem FindInstance would be better ...
4
votes
0answers
61 views
ShowSelection color
The color of a selection is controlled by the operating system. E.g., enter the following code in separate cells.
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4
votes
0answers
398 views
Controlling the time step in NDSolve?
I generally use NDSolve for stiff non linear partial differential equations of 4th order. I find that a BDF1 method generally does well to placate my beast of a PDE.
I've also tried out ...
3
votes
0answers
79 views
How do I add options to a built in function, which only apply to a certain class of argument?
I'd like to add an option to a built-in function that only applies when it is given an argument of a certain form.
For example, something like this approach to extending ...
2
votes
0answers
70 views
How can this function's options be used in different places?
I wrote this function to make a ListPlot where the points are colored by a third argument.
...
2
votes
0answers
190 views
Set Global Maximum Precision
I'm sure this has been asked before, but I've looked around and can't figure it out:
How do I set a global maximum precision for a notebook (or in general, globally)?
I have a large notebook in ...
2
votes
0answers
125 views
EventLocator with LSODA?
Is the EventLocator option not compatible with LSODA on NDSolve. Below is what I tried to do ...
1
vote
0answers
116 views
How to use If with long instructions?
I would like to execute the following code, in which if the condition is true it should execute two instructions instead of one. When I run the code the instructions are executed, but no result is ...
1
vote
0answers
111 views
NDSolve Convergence test failure and significant effect of DifferenceOrder on eventual results
I am solving a non linear partial differential equation with what I call free boundary conditions (solid mechanicists would know this as simply supported).
I realized that this boundary condition ...
0
votes
0answers
244 views
Unexpected result from contour plot - where is the color gradient?
When I plot a contour plot of my (in)famous code :P I get some unexpected results that I don't quite understand.
My code (the one that has ...
