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MathGroup Archive 2005

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Re: Crossing of 3D functions

  • To: mathgroup at smc.vnet.net
  • Subject: [mg56994] Re: [mg56978] Crossing of 3D functions
  • From: Chris Chiasson <chris.chiasson at gmail.com>
  • Date: Thu, 12 May 2005 02:32:34 -0400 (EDT)
  • References: <200505110925.FAA24136@smc.vnet.net>
  • Reply-to: Chris Chiasson <chris.chiasson at gmail.com>
  • Sender: owner-wri-mathgroup at wolfram.com

Can you post your code in "input form"?

On 5/11/05, Paawel <fonfastik at interia.pl> wrote:
> Hello
> I have two functions of surfaces
> 
> F1=\!\(\(-7.516\)*\
>       Exp[\(-3.076\)*\((r - 1.184)\)]*\((1 -
>           8.28*10\^\(-5\)*\((180\  - \ f)\)\^2)\)*0.7\^0.5 +
>     3.758*Exp[\(-6.152\)*\((r - 1.184)\)] + 3.92\)
> 
> and
> 
> F2=\!\(\(-0.958\)*\ Exp[\(-4.993\)*\((r - 1.375)\)]*\((1 - \
> 1.07*10\^\(-3\)*\((133\  - \ f)\)\^2)\)*1\^0.5 + 0.479*
>           Exp[\(-9.986\)*\((r - 1.375)\)] + 0.479\)
> 
> variables are r and f
> 
> I want to find a plot which describes crossing of these functions.
> 
> I tried Solve command but without any success
> 
> I also tried a simpler example
> Fa=Exp[-(x^2 + y^2)]
> and
> Fb=0.5
> and when I used
> Solve[Fa == Fb, {y}]
> I received y1 and y2 - two parts of wanted function
> How to obtain one function (circle) from the above Fa nad Fb?
> 
> Please Help
> Pawel
> 
> 


-- 
Chris Chiasson
http://chrischiasson.com/
1 (810) 265-3161


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