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Re: Ploting integral curves

  • To: mathgroup at smc.vnet.net
  • Subject: [mg89990] Re: Ploting integral curves
  • From: dh <dh at metrohm.ch>
  • Date: Thu, 26 Jun 2008 04:39:39 -0400 (EDT)
  • References: <g3t6p6$ihk$1@smc.vnet.net>


Hi,

I assume you want to plot the solution to the ODE. E.g numerically:

y/.NDSolve[{4x^2+y[x]  y'[x]==0,y[0]==1},y,{x,0,0.5}][[1]]

Plot[sol[x],{x,0,0.5}]

or smybolically:

sol=y/.DSolve[{4x^2+y[x]  y'[x]==0,y[0]==1},y,x][[1]]

Plot[sol[x],{x,0,0.5}]

hope this helps, Daniel



noxon wrote:

> if anybody can give me some examples of ploting some integral curves, i

> would be very gracious... for example: 4x^2+2yy'=0   ....how can i plot

> that, i've tried everything but there is no curve....

> 

> 

> 





-- 



Daniel Huber

Metrohm Ltd.

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CH-9100 Herisau

Tel. +41 71 353 8585, Fax +41 71 353 8907

E-Mail:<mailto:dh at metrohm.com>

Internet:<http://www.metrohm.com>




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