Re: Strange behaviour of Simplify
- To: mathgroup at smc.vnet.net
- Subject: [mg79097] Re: Strange behaviour of Simplify
- From: Andreas Maier <andimai at web.de>
- Date: Wed, 18 Jul 2007 03:02:35 -0400 (EDT)
- References: <f7caue$9bj$1@smc.vnet.net><f7f3ce$og4$1@smc.vnet.net>
On Jul 16, 8:31 am, Peter Pein <pet... at dordos.net> wrote: > Andreas Maier schrieb:> Hi, > > > i'm trying to simplify the following expression > > > In:= gamma=c Sqrt[g00])/Sqrt[c^2 g00 + g11 v^2] > > ... > > > > > Why is Mathematica (I'm using V6.0) able to cancel Sqrt[g00], but is > > not > > able to cancel c? > > ... > > because there is not c but Sqrt[c^2] in the denominator (try an > arbitrary c with Re[c] < 0). > > P=B2 But i tried to simplify with the assumption c>0 (I also tried Sqrt[c^2]> 0). This should work, but it doesn't. The only solution i found is the one posted by Andrzej Kozlowski. Andreas Maier