Strange behaviour of Simplify
- To: mathgroup at smc.vnet.net
- Subject: [mg79008] Strange behaviour of Simplify
- From: Andreas Maier <andimai at web.de>
- Date: Sun, 15 Jul 2007 01:14:02 -0400 (EDT)
Hi,
i'm trying to simplify the following expression
In:= gamma=c Sqrt[g00])/Sqrt[c^2 g00 + g11 v^2]
In:=LeafCount[gamma]
Out:=52
using Simplify
In:= gamma2=Simplify[gamma, {Sqrt[g00] > 0, c > 0 }]
Out:=c/Sqrt[c^2 + (g11 v^2)/g00]
In:=LeafCount[gamma2]
Out:=44
Why is Mathematica (I'm using V6.0) able to cancel Sqrt[g00], but is
not
able to cancel c? I also tried ComplexityFunction->LeafCount, which
should work, because
In:=gamma3=1/Sqrt[1 + (g11 v^2)/(c^2 g00)]
In:=LeafCount[gamma3]
Out:=43
the LeafCount of gamma3 is smaller than gamma2, but it doesn' work.
Can anybody tell me, how i can transform gamma to gamma3 in
Mathematica?
Andreas Maier
- Follow-Ups:
- Re: Strange behaviour of Simplify
- From: Andrzej Kozlowski <akoz@mimuw.edu.pl>
- Re: Strange behaviour of Simplify