Re: How to plot this
- To: mathgroup at smc.vnet.net
- Subject: [mg64457] Re: How to plot this
- From: Renan <renan.birck at gmail.com>
- Date: Fri, 17 Feb 2006 04:12:51 -0500 (EST)
- References: <dt1coe$5j$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
siegmund natter escreveu no grupo comp.soft-sys.math.mathematica:
> 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.
So, what is y[x]?
(>> means input here)
>> eqn1 = x+y == 2 x y
x+y == 2 x y
>> eqn1 /. y -> y[x]
x+y[x] == 2 x y[x]
Maybe you want this:
Solve[%,y[x]] //InputForm
{{y[x] -> x/(-1 + 2*x)}}