[Maxima-bugs] [ maxima-Bugs-769988 ] Warning for non-polynomial algsys

[SourceForge.net <no...@so...>]

Bugs item #769988, was opened at 2003-07-11 23:22
Message generated for change (Tracker Item Submitted) made by Item Submitter
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=104933&aid=769988&group_id=4933

Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Stavros Macrakis (macrakis)
Assigned to: Nobody/Anonymous (nobody)
Summary: Warning for non-polynomial algsys

Initial Comment:
Solve for multiple variables calls Algsys.  As it says 
(clearly!) in the documentation, this only works for 
polynomial equations.

It would be useful, I think, if we would give a warning 
(or an error?) when a non-polynomial equation were 
passed to algsys, e.g.

(C1) solve(sqrt(a^2+b^2)=0,[a,b])
Warning: Solve/Algsys can only solve for multiple 
variables when the equations are polynomial.  The 
equation sqrt(a^2+b^2)=0 is not polynomial.

(D1)         []

This is a common beginner's error, I think, encouraged of 
course by the fact that the command is called "solve" -- 
you'd think it could solve any simple equation....

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=104933&aid=769988&group_id=4933