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Thread Subject:
What's the best way to solve this system of equations?

Subject: What's the best way to solve this system of equations?

From: Adam Flaugh

Date: 13 Sep, 2010 15:20:10

Message: 1 of 2

I am needing to numerically integrate a system of two equations with respect to time, and was hoping to get some advice on the best way to approach the problem in MATLAB.

The equations are as follows:

α_1 y''+α_2 y'+α_3 θ'+α_4 y+α_5 θ+α_6 y^3+α_7 y^2 θ+α_8 y^2 sin(Ωt)+α_9 y^2 cos(Ωt)=F_1 sin(Ωt)+F_2 cos(Ωt)

and

α_10 θ''+α_11 y'+α_12 θ'+α_13 y+α_14 θ+α_15 y^3+α_16 y^2 θ+α_17 y^2 sin(Ωt)+α_18 y^2 cos(Ωt)=F_3 sin(Ωt)+F_4 cos(Ωt)

Y and theta are the terms of interest, while alpha, omega, and F are constants.

Thanks to anyone who has suggestions.
It is greatly appreciated!

Adam Flaugh

Subject: What's the best way to solve this system of equations?

From: Roger Stafford

Date: 13 Sep, 2010 18:17:20

Message: 2 of 2

"Adam Flaugh" <flaugh21@yahoo.com> wrote in message <i6lff9$osq$1@fred.mathworks.com>...
> I am needing to numerically integrate a system of two equations with respect to time, and was hoping to get some advice on the best way to approach the problem in MATLAB.
> .......
- - - - - - - - -
  Look up the documentation for matlab's 'ode' functions.

Roger Stafford

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