Please refer to jpeg extension(adsbygoogle = window.adsbygoogle || []).push({});

I think that the following MatLab code will solve the first D.E,

>> function xdot = nlseq(t,x); % Returns the state derivative

>> R = [2 -1; 3 5];

>> L = [1 – cos(0.5*t) 5*sin(4*t); 20*sin(2*t) 3–cos(0.8*t)];

>> V = [15*sin(t); 25*cos(t)];

>> xdot = inv(L)*(V – R*X);

>> tspan = [0, 10]; % Time interval

>> x0 = [0;0]; % Initial condition

>> [t, x] = ode23(‘nlseq’,tspan,x0);

I would like to know how to incorporate the second D.E into the above code so that I can solve for both (I realize I need to make another xdot command, but I’m not sure how to do it).

Another problem that I have is that I want to plot y vs w, where w is the solutions from the second D.E and y is shown on the jpeg extension,

So basically I want to take my solution (at every interval) from solving the first D.E. and transform it through the matrix shown on the extension. I would think that I need to write some kind of loop, but I’m not sure how to do it.

Any help with the above problems would be greatly appreciated

**Physics Forums - The Fusion of Science and Community**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Matlap help

Loading...

Similar Threads for Matlap help | Date |
---|---|

Help installing old programs onto new a Win 10 computer | Apr 12, 2018 |

Future Technology: Helpful or Harmful? | Jan 13, 2018 |

Can I upgrade my laptop? | Oct 21, 2017 |

Help with Firefox | Jun 13, 2017 |

**Physics Forums - The Fusion of Science and Community**