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MathGroup Archive 2006

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Re: How to plot this

  • To: mathgroup at smc.vnet.net
  • Subject: [mg64432] Re: How to plot this
  • From: dh <dh at metrohm.ch>
  • Date: Fri, 17 Feb 2006 04:11:39 -0500 (EST)
  • References: <dt1coe$5j$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi, I think you forgot to Solve command:
This works
eqn1 = x + y == 2*x*y;
y[x_] = y /. Solve[eqn1, y, x][[1]];
Plot[y[x], {x, 1, 3}]

Daniel

siegmund natter wrote:
> Hello
> 
> Can anyone tell why this is wrong?
> 
> eqn1 = x + y == 2*x*y;
> eqn1 /.y -> y[x];
> Plot[y[x], {x, 1, 3}]
> 
> How do I do it correctly? (This is just an example; I want to do this 
> with a much more difficult equation)
> Thanks a lot.
> 
> (I am using Mathematica 5.1)
> 


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