#160 declare(integrate,noun); kill(all); integrate(0,y)

closed
nobody
None
5
2005-04-04
2002-10-16
No

This problem is a reduced from bug [ 612107 ] Test
rtestode fails if run after rtest3.

ode2 can solve the example, but it will fail if preceded by
commands declare(integrate, noun); kill(all);

This works
(C1) eq:x^2*cos(x*y)*'diff(y,x)+(sin(x*y)+x*y*(cos(x*y)))=0
$
(C2) ode2(eq,y,x);
(D2) x SIN(x y) = %C

so does this
(C1) declare(integrate, noun);
(D1) DONE
(C2) eq:x^2*cos(x*y)*'diff(y,x)+(sin(x*y)+x*y*(cos(x*y)))=0
$
(C3) ode2(eq,y,x);
(D3) x SIN(x y) = %C

This fails
(C1) declare(integrate, noun);
(D1) DONE
(C2) kill(all);
(D0) DONE
(C1) eq:x^2*cos(x*y)*'diff(y,x)+(sin(x*y)+x*y*(cos(x*y)))=0
$
(C2) ode2(eq,y,x);
/
[
(D2) x SIN(x y) + I 0 dy = %C
]
/

Discussion

  • David Billinghurst

    • summary: kill(all) causes ode2 failure --> declare(integrate,noun); kill(all); integrate(0,y)
     
  • David Billinghurst

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    user_id=365569

    I have further reduced the problem to

    declare(integrate,noun);
    kill(all);
    integrate(0,x);

    leaving integrate unevaluated.

     
  • James Amundson

    James Amundson - 2005-04-04

    Logged In: YES
    user_id=28457

    The reported bug is not present in the current cvs version of
    Maxima.

    Thank you for your report. If you see this bug in a later version
    of Maxima, please submit a new bug report.

     
  • James Amundson

    James Amundson - 2005-04-04
    • status: open --> closed
     

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