Re: extract from Reduce
- To: mathgroup at smc.vnet.net
- Subject: [mg130365] Re: extract from Reduce
- From: Bob Hanlon <hanlonr357 at gmail.com>
- Date: Thu, 4 Apr 2013 22:33:56 -0400 (EDT)
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- References: <20130404025057.81F326A68@smc.vnet.net>
a := x == 3 || x == 4 || x == 7 x /. {a // ToRules} {3, 4, 7} a := x == 6 x /. {a // ToRules} {6} Bob Hanlon On Wed, Apr 3, 2013 at 10:50 PM, <hamiltoncycle at gmail.com> wrote: > I have a result from the command Reduce that looks like this (as an > example): > > a:= x==3||x==4||x==7 > > I need to extract the numbers but I can't find a nice way to handle the > case when there is only one equation, for instance: > > a:= x==6 > > currently I check what the head of the expression is (Head[a]) and handle > the case Head[a]=Or with a Map[] and the case Head[a]="Equal" with a[[2]]. > Not very nice, but I guess that there is a neat way to do it. > > cheers, Robert > >
- References:
- extract from Reduce
- From: hamiltoncycle@gmail.com
- extract from Reduce