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These are questions asked by casperyc


The subs command is not working properly for Vector type, see worksheet.

I can use simplify instead, but that's not what I really wanted.




Hi all,

I am having some problems when solving high order polynomials. When oders are 'high' and systems involve multiple variables, Maple is slow to do so.

See in worksheet for detailed codes.

kappa - gives the vector that i am interested in

sC - a reparameterisation which has 'summation' in it

Aim is to verify that it works (it should!)

I currently ask...


How do I get ride of these Rootof?

I tried simplify,evala,value,Simplify and ect. Didnt really find anything useful.



I dont care which root they actually take, all I want is one of the roots. So I can then use subs for substitution.


Hi all,

What else could I try if I encounter this error?

Warning:  Incomplete separation.



I read the pdsolve help page, where it says I should have a solution with this warning, but I got nothing but the error.



Say for a 126 by 18 symbolic matrix, substituting numerical values into the matrix DD1 takes about 10 seconds (using time() );

for a 62 by 16 matrix, take just about 1/5 second.

By when the matrix is about 254 by 20, it take much longer! More than a minute!

I never actually waited how long, but I am wondering if there is something wrong? Am I using the right command?

Say the matrix is DD1 with numpar:=[x=0.3,y=0.2,z=0.98,....]

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