Re: Number of roots from Solve?

*To*: mathgroup at smc.vnet.net*Subject*: [mg48457] Re: Number of roots from Solve?*From*: Bill Rowe <readnewsciv at earthlink.net>*Date*: Mon, 31 May 2004 00:13:33 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

On 5/30/04 at 6:12 AM, akoz at mimuw.edu.pl (Andrzej Kozlowski) wrote: >I think having inexact coefficients does not make any difference >here since I am pretty sure Solve first applies Rationalize to >everything. In fact I don&t think it would not make any sense to do >otherwise, given that Solve uses only algebraic and not numerical >techniques. Since the equations are non-polynomial I can see >nothing at all strange about them having very different numbers of >roots. I don't understand your comments regarding Solve and Rationalize. Why does the fac Solve uses algebraic techniques imply the usage of Rationalize? If I do Solve[x^2+.1 x + .01 == 0,x] I get {x->-0.1,x->-0.1} and if I do Solve[Rationalize[x^2 + .1 x + .01 == 0], x] I get {x->-1/10}, x->-1/10} Doesn't that argue against Solve first applying Rationalize? -- To reply via email subtract one hundred and four