# Recent content by madjid222

1. ### Ode45 matlab

I would be grateful if you could possibly help me
2. ### Ode45 matlab

1. Homework Statement If we have differential variable of matrix kind ( with dimention 3*3 ) and non matrix ( with dimention 1) simaltanously and as a couple ,how can we use ode45 ? If we have only matrix kind , we can use m file of ode at first with the command of reshape (3,3) and then...
3. ### MATLAB Ode 45 (matlab)

If we have differential variable of matrix kind ( with dimention 3*3 ) and non matrix ( with dimention 1) simaltanously and as a couple ,how can we use ode45 ? If we have only matrix kind , we can use m file of ode at first with the command of reshape (3,3) and then change it to column one.What...

plz help me
5. ### MATLAB ODE matlab

Hi Friends I want to plot variables (b,u) that are in function "step" . function main [t,v]=ode45('step',[0 20],0,[]); plot(t,v) function dv=step(t,v) c1=1; if t<10 u=1; else u=-1; end dv=c1*u-2*v; b=dv/2; but these variables are unknown in function "main". thanks.