[Maxima-bugs] [ maxima-Bugs-1663399 ] solve/algsys bug

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Bugs item #1663399, was opened at 2007-02-19 05:47
Message generated for change (Comment added) made by willisbl
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Vadim V. Zhytnikov (vvzhy)
Assigned to: Nobody/Anonymous (nobody)
Summary: solve/algsys bug

Initial Comment:
sys:[b2 + a1 = r2, a1 * b2 = r3, a2 * b2 + a3 * b1 = r4, a3 * b2 + a5 + r4 = d5, a5 * b1 = 0];
solve(sys, [a1, a2, a3, a5, r2, r3, r4, b1, b2]);

result in 

Maxima encountered a Lisp error:

 Error in MACSYMA-TOP-LEVEL [or a callee]: 0 is not of type LIST.

Reported by Laurent Couraud

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>Comment By: Barton Willis (willisbl)
Date: 2007-02-19 08:42

Message:
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user_id=895922
Originator: NO

With algebraic : true, we get a different error:

(%i7) solve(sys, [a1, a2, a3, a5, r2, r3, r4, b1, b2]), algebraic : true;
`algsys' cannot solve - system too complicated. -- an error.  To debug
this try debugmode(true);

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