Re: Re: solve errors...
- To: mathgroup at smc.vnet.net
- Subject: [mg43074] Re: [mg43064] Re: [mg43046] solve errors...
- From: Selwyn Hollis <selwynh at earthlink.net>
- Date: Mon, 11 Aug 2003 02:15:54 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
On Sunday, August 10, 2003, at 01:46 AM, sean kim wrote: >> > > 1. How do I tell the mathematica to ignore the solutions that are not > real and not positive? isn't there a option for solve? I remember > something vaguely about some kinda options for solve that allow you to > do that... I can't remember the details or where I saw them.. No way I can think of, except to discard them at the end. > 2. i was going to ask this the other day, but the stopping test that > you used in reply to sabrina's question... where is that from? can i > get some more information on that some place? It sounded like she > wanted to get the EC50 of some kinda enzyme. so if x[t] is at it's half > maximal, then it's called the EC50 for the ezyme noted as the x[t] in > enzymatics. ( lotta biologist are in this forum. that's so funny) StoppingTest is still undocumented for some reason. I'd never have known about it, had someone not asked about it in MathGroup. > > 3. your DE package seems to cause soem errors in my Mathematica 4.0 > <<DiffEqs`DEGraphics` > SetDelayed::"write": "Tag \!\(FilterOptions\) in \ > \!\(FilterOptions[\(\(command_Symbol, options___\)\)]\) is Protected." > SetDelayed::"write": "Tag \!\(FilterOptions\) in \ > \!\(FilterOptions[\(\(opts_List, options___\)\)]\) is Protected." > > is this a Mathematica version specific thing? can i still use it? > even with > the errors shown? Not sure. This is the first I've heard of that. I'll look into it. ----- Selwyn Hollis http://www.math.armstrong.edu/faculty/hollis