From: SourceForge.net <noreply@so...>  20030506 13:50:33

Bugs item #733271, was opened at 20030506 07:50 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=733271&group_id=4933 Category: None Group: None Status: Open Resolution: None Priority: 5 Submitted By: Robert Dodier (robert_dodier) Assigned to: Nobody/Anonymous (nobody) Summary: "integrate" asks if FALSE is pos, neg, or zero Initial Comment: "integrate((1+erf(sqrt(1/u).(u1)))/2,u,0,inf);" asks if FALSE is positive, negative, or zero. That doesn't seem like a meaningful question. Since sqrt(1/u).(u1) increases like sqrt(u), the integrand approaches a positive constant (namely one) and so the answer ought to be INF, I think. I am running Maxima 5.9.0 on RedHat Linux 7.2.  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=733271&group_id=4933 
From: SourceForge.net <noreply@so...>  20041125 17:22:29

Bugs item #733271, was opened at 20030506 07:50 Message generated for change (Comment added) made by robert_dodier You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=733271&group_id=4933 Category: None Group: None Status: Open Resolution: None Priority: 5 Submitted By: Robert Dodier (robert_dodier) Assigned to: Nobody/Anonymous (nobody) >Summary: "integrate" asks if FALSE is pos, neg, or zero Initial Comment: "integrate((1+erf(sqrt(1/u).(u1)))/2,u,0,inf);" asks if FALSE is positive, negative, or zero. That doesn't seem like a meaningful question. Since sqrt(1/u).(u1) increases like sqrt(u), the integrand approaches a positive constant (namely one) and so the answer ought to be INF, I think. I am running Maxima 5.9.0 on RedHat Linux 7.2.  >Comment By: Robert Dodier (robert_dodier) Date: 20041125 10:22 Message: Logged In: YES user_id=501686 attempt to fix title: replace ampersandquotsemicolon w/ quote marks (bug in sourceforge script, apparently)  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=733271&group_id=4933 
From: SourceForge.net <noreply@so...>  20050516 04:53:18

Bugs item #733271, was opened at 20030506 07:50 Message generated for change (Comment added) made by robert_dodier You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=733271&group_id=4933 Category: None Group: None Status: Open Resolution: None Priority: 5 Submitted By: Robert Dodier (robert_dodier) Assigned to: Nobody/Anonymous (nobody) Summary: "integrate" asks if FALSE is pos, neg, or zero Initial Comment: "integrate((1+erf(sqrt(1/u).(u1)))/2,u,0,inf);" asks if FALSE is positive, negative, or zero. That doesn't seem like a meaningful question. Since sqrt(1/u).(u1) increases like sqrt(u), the integrand approaches a positive constant (namely one) and so the answer ought to be INF, I think. I am running Maxima 5.9.0 on RedHat Linux 7.2.  >Comment By: Robert Dodier (robert_dodier) Date: 20050515 22:53 Message: Logged In: YES user_id=501686 Trying this with commutative multiplication instead of noncommutative (i.e. integrate((1+erf(sqrt(1/u)*(u1)))/2,u,0,inf);) yields a noun form, without asking a question. Bug is still present in 5.9.1cvs from 3/31/2005 (clisp 2.33, linux).  Comment By: Robert Dodier (robert_dodier) Date: 20041125 10:22 Message: Logged In: YES user_id=501686 attempt to fix title: replace ampersandquotsemicolon w/ quote marks (bug in sourceforge script, apparently)  You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=104933&aid=733271&group_id=4933 