Re: Differential equation
- To: mathgroup at smc.vnet.net
- Subject: [mg69492] Re: Differential equation
- From: "ben" <benjamin.friedrich at gmail.com>
- Date: Thu, 14 Sep 2006 06:55:28 -0400 (EDT)
- References: <ee8gca$imk$1@smc.vnet.net>
Hi Mike, this cannot work: you have two degrees of freedom (x and y), but only one ODE; you need as many ODEs as you have degrees of freedom. However, you can express y in terms of x x(t)-A*dy/dt=0 A*dy/dt=x dy/dt=A^-1 * x dy=A^-1 * x dt y(t)-y(0)=\int_0^t dt' A^-1 x(t') Bye Ben Mike schrieb: > Dear all, > > I would kindly ask for an assistance please. > I do not know how to solve this differential equation : > > x(t)-A*dy/dt=0 > > Where, > A - constant > x - variable as a function of time (t) > y - variable as a function of time (t) > t - time > > > Thanks Mike77