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MathGroup Archive 1997

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Re: FindMinimum var specification

  • To: mathgroup at
  • Subject: [mg9000] Re: FindMinimum var specification
  • From: Robert Knapp <rknapp>
  • Date: Tue, 7 Oct 1997 03:35:47 -0400
  • Organization: Wolfram Research, Inc.
  • Sender: owner-wri-mathgroup at

Bernd Gehrmann wrote:
> Hello,
> why does the following not work (and how can
> I make it work)?
> vars := Sequence[{x[1],0.1},{x[2],0.1}];
> ...
> FindMinimum[x[1]^2 + x[2]^2, vars];
> Bernd.

This doesn't work because FindMinimum has the HoldAll attribute.  
To have this recognized properly as the variable specification it
is it needs to be evaluated.

FindMinimum[x[1]^2 + x[2]^2, Evaluate[vars]]

does what you want.

Rob Knapp
Wolfram Research

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