## 962 Reputation

16 years, 192 days
University of Kent
Dr

## [bug?]subs not working for (column) Vect...

Maple 17

Hi,

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.

Casper

## solving high order polynomials (with sum...

Maple 17

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.

slow.zip

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!)

## How do I get ride of these Rootof...

Maple 17

Hi,

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.

Casper

## Warning: Incomplete separation....

Maple 17

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.

## Slow in eval when substituting numerical...

Maple 17

Hi,

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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