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MathGroup Archive 2007

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Re: minimum of a function

  • To: mathgroup at smc.vnet.net
  • Subject: [mg75042] Re: minimum of a function
  • From: Bill Rowe <readnewsciv at sbcglobal.net>
  • Date: Sun, 15 Apr 2007 05:08:34 -0400 (EDT)

On 4/14/07 at 1:15 AM, Sven-Philip.Krueger at phys.uni-goettingen.de
(Sven Krueger) wrote:

>I search the minimum of a function fmin := FindMinimum[f[x], {x, 0}]
>Evaluate[fmin]

>I get out for example {2.4, {x -> 0.2}}

>Is it possible to use the result x=0.2 afterwards? I would like to
>fix x after getting out the value of x at different results of fmin.

Yes, it is possible to use the result. For example, consider:

In[1]:=
min = {2.4, {x -> 0.2}};
x^2 - 1 /. Last@min

Out[2]=
-0.96

Or

In[3]:=
2 x/.Last@min

Out[3]=
0.4

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