Two options for DEplot, "velocity" and "color=velocity" are referred to in the Maplesoft conference presentation below, but don't work on my Maple13. Were these options ever implemented? Do they require a call to a special package (no mention of that in the presentation below, dated 2005)? These are very nice options, so if you know anything about them or something similar, I'd appreciate very much your suggestions.

I used to be able to select, copy, and paste the output of a Matrix, but now instead of copying the output the action copies something like Matrix(%id = 410996784). I am using Maple13/Classic/1D. Any fix? thanks.

I wanted to have solve avoid a particular soluton. I was in for a surprise. Consider:

Perhaps the following behavior is to be expected? would someone explain to me why Maple doesn't automatically apply the simplification needed to ascertain the equality and "erroneously" returns false?

my system [u(t),v(t),w(t)] is highly non-linear. I want to understand the local behavior at [u=0,v=0,w=0]. The boundary conditions are as follows: u(0) is given but v(0) and w(0) are not. I want to know if there is a suitable choice of v(0) and w(0) such that the system will converge to the critical point [0,0,0].

Can this system be approximated by a linear system? Or by a two-dimensional system?