Maxima -- GPL CAS based on DOE-MACSYMA / Bugs / #2311 inappropriate messages from integrate

#2311 inappropriate messages from integrate

Milestone: None

Status: closed

Owner: nobody

Labels: None

Priority: 5

Updated: 2012-12-15

Created: 2011-11-25

Creator: Ted Woollett

Private: No

(%i1) integrate(acos(%i*x),x,-2,3);

Is W35620 positive or negative?

pos;
Is W37394 positive or negative?

pos;
(%o1) %i*(-3*log(sqrt(10)+3)-2*log(sqrt(5)-2)+sqrt(10)-sqrt(5))+5*%pi/2

Discussion

Ted Woollett - 2011-12-03

system info:
Maxima version: 5.25.1
Maxima build date: 10:2 9/6/2011
Host type: i686-pc-mingw32
Lisp implementation type: GNU Common Lisp (GCL)
Lisp implementation version: GCL 2.6.8

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Rupert Swarbrick - 2012-01-11

This seems to be fixed in the latest tree:

Maxima 5.26.0_3_gd5d04f2 http://maxima.sourceforge.net
using Lisp SBCL 1.0.54.0.debian
Distributed under the GNU Public License. See the file COPYING.
Dedicated to the memory of William Schelter.
The function bug_report() provides bug reporting information.
(%i1) integrate(acos(%i*x),x,-2,3);
(%o1) 3 acos(3 %i) - 2 acos(2 %i) + 2 %pi + sqrt(10) %i - sqrt(5) %i

(and I checked: the two answers agree numerically)

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Robert Dodier - 2012-12-15

Not present in Maxima 5.29.1. Closing this report.

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Robert Dodier - 2012-12-15

status: open --> closed

milestone: --> None
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