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[MUG] Integration bug, i think
| [MUG] Integration bug, i think |
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Author: Halvor Mehlum
Posted: 27/11/2000 08:08:22 GMT
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>> From: Halvor Mehlum
Dear Maple friends
I get the following inconsistency on
my Windows 98 running Maple 6
As part of my work I executed the following code:
>a1 := .9*(.9+8.*exp(-1))*exp(.1*tt)/(1+8*exp(-1)):
>b1:=int(exp(-tt)*ln(a2),tt=t..1):
>c1:=evalf(subs(t=0.5,b1));
>a2:=simplify(a1):
>b2:=int(exp(-tt)*ln(a1),tt=t..1):
>c2:=evalf(subs(t=0.5,b2));
The result was as follows
c1 := -.01387124925
c2 := -.02000179884
which is surprising as they are supposed to be identical. The expressions
b1 and b2 are also different. Does the same problem arise on other machines?
Halvor
============================================
Halvor Mehlum http://www.uio.no/~hmehlum
Ragnar Frisch Centre for Economic Research
Department of Economics, University of Oslo
Box 1095, Blindern
0317 Oslo Norway
Phone : +47 22855156 Fax: +47 22855035
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