Re: using answer form reduce
- To: mathgroup at smc.vnet.net
- Subject: [mg68635] Re: [mg68616] using answer form reduce
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Mon, 14 Aug 2006 06:44:06 -0400 (EDT)
- Reply-to: hanlonr at cox.net
- Sender: owner-wri-mathgroup at wolfram.com
x /. {Reduce[(x - 3.) (x - 2.) (x + 7.) == 0, x] // ToRules}
{-7., 2., 3.}
Bob Hanlon
---- akil <akomur at wanadoo.nl> wrote:
> After using reduce I get the following two types of answers:
>
> answer == Real1 || answer == Real2
> or
> answer == Real3
> , the type can change from one formula to another.
>
> I need the Reals, and put them all in a list. The problem is getting all the
> reals, without knowing which type I deal with, it should be able to be done
> fast.
>
> I tried making a list of the returned adres, and then using
> Cases[list, _Real, Infinity] and using Select[list,NumericQ] but both do not
> give me the answer I require.
>
> How can I get the answer I require e.g. something like {Real1,Real2,Real3}