[18503] in Athena Bugs
sgi 8.4.16: Maple
daemon@ATHENA.MIT.EDU (Jeremy A Teichman)
Tue Nov 14 17:06:36 2000
Message-Id: <200011142206.RAA476576@bingham.mit.edu>
To: bugs@MIT.EDU
Date: Tue, 14 Nov 2000 17:06:30 -0500
From: Jeremy A Teichman <jteichm@MIT.EDU>
System name: bingham.mit.edu
Type and version: IP32 8.4.16
Display type: CRM
Shell: /bin/athena/tcsh
Window manager: 4Dwm
What were you trying to do?
Take a partial derivative of a sum.
What's wrong:
The reported answer shows a spurious dependence on the order of the
arguments. For the first case shown below, the correct answer is returned.
For the second case, zero is returned.
What should have happened:
diff(sum(f(m,theta,r)*sin(m*theta),m=1..N),r);
should produce the same result as
diff(sum(f(m,r,theta)*sin(m*theta),m=1..N),r);
Please describe any relevant documentation references:
[Please replace this line with your information.]
