Re: What is causing this error message?
- To: mathgroup at smc.vnet.net
- Subject: [mg57564] Re: [mg57537] What is causing this error message?
- From: "David Park" <djmp at earthlink.net>
- Date: Wed, 1 Jun 2005 06:02:09 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Equations must me entered with "==", not with "=". You are trying to Set ("=") an expression on the left whose Head is Plus. Thus you are trying to redefine Plus. Mathematica won't normally let you do that. David Park djmp at earthlink.net http://home.earthlink.net/~djmp/ From: Bookreader [mailto:bookreader127 at yahoo.com] To: mathgroup at smc.vnet.net NSolve[{x^3y + xy - 10 = 0, xy^2 - xy + 6 = 0}, {x, y}] Set::write: Tag Plus in -10 + x y + x^3 y is Protected. More? Please tell me how to correct this. Thanks.