#1024 solve([a=b,b=3],[a])

closed
nobody
5
2009-01-02
2006-11-24
Anonymous
No

On
Maxima 5.9.3.99rc4 (which I guess is
almost identical to 5.10)
compiled with
sbcl for Ubuntu

solve([a=b,b=3],[a])

produces
-------------------
Maxima encountered a Lisp error:

Error during processing of --eval option "(cl-user::run)":

The value 2 is not of type LIST.

Automatically continuing.
To reenable the Lisp debugger set *debugger-hook* to nil.
------------------

I think solve should work also when
the number of equations is different from
the number of unknowns.

Other people have the same problem with
different configurations.
For example Maxima 5.10.0 + sbcl or clisp.

Some people have reported:
Maxima 5.10.0 + gcl->"Inconsistent equations"
(no Lisp error)

Discussion

  • Nobody/Anonymous

    Logged In: NO

    i think this is not a bug
    if b!=3 these equations are inconsistent indeed.
    guenter

     
  • Dieter Kaiser

    Dieter Kaiser - 2009-01-02
    • status: open --> closed
     
  • Dieter Kaiser

    Dieter Kaiser - 2009-01-02

    No problem with Maxima 5.17post on Windows with GCL 2.6.8 and CLISP 2.44 and Ubuntu with CLISP 2.44.

    (%i68) solve([a=b,b=3],[a]);
    (%o68) []
    (%i69) solve([a=b,b=3],[a,b]);
    (%o69) [[a = 3, b = 3]]

    Closing this bug report.

    Dieter Kaiser

     

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