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Re: Solving Differential Equations with Vectors

  • To: mathgroup at smc.vnet.net
  • Subject: [mg83268] Re: Solving Differential Equations with Vectors
  • From: "Kevin J. McCann" <Kevin.McCann at umbc.edu>
  • Date: Fri, 16 Nov 2007 05:36:20 -0500 (EST)
  • Organization: University System of Maryland
  • References: <fhh7j2$8q0$1@smc.vnet.net>

For starters, you could read the documentation on DSolve rather than 
expecting the rest of us to do it for you. (Your syntax below is 
completely hosed.) If you do that, then you could look at some of the 
examples that use coupled equations.

You will probably also need to look at Thread to correctly equate 
vectors, initial conditions, etc., e.g.

v={x,y};
c={1, 2};
Thread[v == c]

Kevin

ram.rachum at gmail.com wrote:
> I'm working on simulations of physical systems, and I need to solve
> DEs that include vectors. But DSolve won't let me input equations with
> vectors! Here's an example:
> 
> DSolve[{x[t] == {5, 0}}, {x[t]}, t]
> 
> It generates Solve::eqf.
> 
> Anyone has any idea what to do?
> 
> Thanks,
> Ram.
> 
> 

-- 

Kevin J. McCann
Research Associate Professor
JCET/Physics
Physics Building
University of Maryland, Baltimore County
1000 Hilltop Circle
Baltimore, MD 21250


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