2525 Reputation

4 years, 355 days

How find out what dsolve,numeric returns...

Maple

I know to ways:

- calling the returned procedure with a value for the independend variable

- printing the procedure with interface(verboseproc=2)

The first requires a procedure and a values that work, the second is quite some typing.

Any other ways?

Why is mod not working in a plot call...

Maple

I did expect the following two plot statements (MaplePrimes is only rendering one statement) to produce the same plot. What did I do wrong when using mod in plot?

 (1)

Estimating number of roots (common solut...

Maple

In this post about a non-linear system of equations solutions were sougth. It turned out that there were no non-trivial solutions for the given numerical values. However, with different numerical values there should be solutions.

In analogy to the fundamental theorem of algebra (which clearly states the number of roots),
I wonder if Maple provides commands that can estimate an upper bound of roots/solutions for a system of multivariate equations by analysing the structure of the system of equations rather than attempting to solve it.

I am not sure if rules, methods or theorems exist at all for multivariate problems. Maybe it is a stupid question but for me this was non-trivial for the case given above.

Can plot plot with colorfunctions ...

Maple

I am looking for something similar to color functions of plot3D. plot.options is directing me to plot,color where I cannot find an example. I tried

```plot(floor(x),x=-3..3,color=floor(x))

Error, (in plot) invalid color specification: floor(x)
```