rtoy
commented
3 months ago Imported from SourceForge on 2024-07-07 12:43:28 Created by willisbl on 2004-10-05 18:58:46 Original: https://sourceforge.net/p/maxima/bugs/570/#2b90
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It seems that this bug has been fixed.
(%i2) integrate(x^n,x,0,inf); Is n positive, negative, or zero?
neg;Is n + 1 positive, negative, or zero?
neg;Is n an integer?
yes;Integral is divergent -- an error. Quitting. To debug this try DEBUGMODE(TRUE); (%i3) build_info();
Maxima version: 5.9.1.1cvs Maxima build date: 9:34 10/4/2004 host type: i686-pc-mingw32 lisp-implementation-type: Kyoto Common Lisp lisp-implementation-version: GCL 2.6.5
Imported from SourceForge on 2024-07-07 12:43:26 Created by macrakis on 2004-05-19 14:04:05 Original: https://sourceforge.net/p/maxima/bugs/570
integrate(x^n,x,0,inf); Is n positive, negative, or zero? neg; Is n + 1 positive, negative, or zero? neg; Is n an integer? y; Error: |$x| is not of type LIST. Error signalled by SINRX.
The integral is of course divergent, but it should not be getting an internal error. Why does it even ask whether n is integral? Strangely, with n non-integer, it correctly diverges.