#186 ode2 internal error for invalid input

closed
nobody
Lisp Core (471)
5
2006-07-01
2002-11-18
No

ode2('diff(y,x,3)=0,y,x) =>

$STATUS is invalid as a function

I realize that ode2 is only supposed to handle 1st and
2nd order, but it should fail more gracefully.

Same error for

similarly for ode2('diff(y,x)^2=1,y,x);

(Maxima 5.5)

Discussion

  • Robert Dodier

    Robert Dodier - 2006-07-01

    Logged In: YES
    user_id=501686

    Appears to have been fixed by r1.2 src/ode2.lisp. At present
    the above examples provoke "Not a proper differential
    equation" which I guess is OK although perhaps not maximally
    informative. Closing this report as fixed.

     
  • Robert Dodier

    Robert Dodier - 2006-07-01
    • status: open --> closed
    • labels: --> Lisp Core
     

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