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Re: Problem with element and Maximize

  • To: mathgroup at smc.vnet.net
  • Subject: [mg82767] Re: Problem with element and Maximize
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Tue, 30 Oct 2007 05:45:12 -0500 (EST)
  • Organization: Uni Leipzig
  • References: <fg6r4j$du1$1@smc.vnet.net>
  • Reply-to: kuska at informatik.uni-leipzig.de

Hi,

you really think that:
if you feed Maximize with floating point (machine preccision numbers)
it would remove all rounding errors and present you an integer ...
and you think that Round[] the solution would not be the better idea ??

Regards
   Jens

Uncle Paul wrote:
> I'm not sure what I am doing wrong.  I am trying to get the nearest
> integer maximim for the mentioned equation.  I could round the X
> value, but I would like to operate Mathematica correctly.
> 
> (*generate the equation*)
> data = {{0, 0}, {10, 10}, {20, 0}, {30, 10}};
> eq = Fit[data, {1, x, x^2, x^3}, x] 
> Plot[eq, {x, 0, 30}]
> 
> Maximize[{eq, x \[Element] Integers}, x]  (*wrong!*)
> 
> Maximize[{eq}, x]      (*correct, but not integer, of course*)
> 
> 
> Best Regards,
> Paul
> 


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