Re: Problems with NMaximize.
- To: mathgroup at smc.vnet.net
- Subject: [mg69172] Re: Problems with NMaximize.
- From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
- Date: Fri, 1 Sep 2006 06:40:17 -0400 (EDT)
- Organization: The Open University, Milton Keynes, UK
- References: <ed6935$jie$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Nacho wrote:
[...snipped...]
> I don't know how to say Mathematica that a variable can take just some
> values (as for r being even), but I just said it is between 0 and 16.
In[1]:=
Or @@ Thread[r == {0, 2, 4, 6, 8, 10, 12, 14, 16}]
Out[1]=
r == 0 || r == 2 || r == 4 || r == 6 || r == 8 ||
r == 10 || r == 12 || r == 14 || r == 16
In[2]:=
NMaximize[{1 + 1/(r - 1),
Or @@ Thread[r == {0, 2, 4, 6, 8, 10, 12, 14,
16}]}, {r}]
Out[2]=
{2., {r -> 2.}}
Regards,
Jean-Marc