Real beginner, never used Maplw before. I want to analyse PDE's through Lie symmetry analysis -- get the infiniteeimals and then generate the invariants. I am going through the standard examples on the help within Maple, but I am stuck on a basic issue which prompts me to think that there may be something different in my version of Maple (although I downloaded it from TTU which I presume should be the latest version).
Here's what I get >>>>>
with(PDEtools, InfinitesimalGenerator, declare);
u(x, t) will now be displayed as u
U: diff_table(u(x, t)):
PDE := U_x,x - U_t = 0;
PDE := U_x,x - U_t = 0
U_x,x - U_t = 0
Error, (in PDEtools:-Infinitesimals) missing dependent variables
I have also tried:
Error, (in PDEtools:-Infinitesimals) not a PDE system w.r.t u
Error, (in PDEtools:-Infinitesimals) not a PDE system w.r.t U
There are many other issues, but let's deal with this one first.