Solve...or not

*To*: undisclosed-recipients:;*Subject*: [mg128537] Solve...or not*From*: "Harker, Anthony" <a.harker at ucl.ac.uk>*Date*: Thu, 1 Nov 2012 03:20:08 -0400 (EDT)*Approved*: Steven M. Christensen <steve@smc.vnet.net>, Moderator*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*Delivered-to*: l-mathgroup@wolfram.com*Delivered-to*: mathgroup-newout@smc.vnet.net*Delivered-to*: mathgroup-newsend@smc.vnet.net*Newsgroups*: comp.soft-sys.math.mathematica

I've seen some discussion of Version 8's Solve[] in this group, but have I missed something explaining this? I have the following behaviour (both under Windows 7) Mathematica 8.0.1.0 Solve[{(y-2)/(x-1)==1,y==0},x] {} Mathematica 7.0.1.0 Solve[{(y-2)/(x-1)==1,y==0},x] {{x->-1}} Tony Tony Harker Department of Physics and Astronomy University College London Gower Street London WC1E 6BT Tel: (within UK) 020 7679 3404 (overseas ) +44 20 7679 3404 E: a.harker at ucl.ac.uk [...] clay possesses one considerable advantage: it is resistant to fire, water, and magnetic disturbances. In [...] a few thousand years, our photographs, books and hard disks will no doubt have disappeared, but our collections of cuneiform tablets will still be there. Dominique Charpin, Reading and Writing in Babylon (2010) translated by Jane Marie Todd.

**Follow-Ups**:**Re: Solve...or not***From:*Murray Eisenberg <murray@math.umass.edu>

**Re: Solve...or not***From:*Bob Hanlon <hanlonr357@gmail.com>