What would the code be using ode45?

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Alyssa Cleveland
Alyssa Cleveland 2016-5-2
回答： Torsten 2016-5-2
How would I write code using ode45 for time interval [5,25] for uprime = sin(uv) with u(5)=2; vprime=5u-3v with v(5)=5. Will I have to use it twice for each (uprime and vprime) or is there a way I can combine them into one ode45 code?

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回答（1 个）

Torsten
Torsten 2016-5-2
function driver
tspan=[5 25];
u0=2;
v0=5;
y0=[u0 ; v0];
[T,Y]=ode45(@myfun,tspan,y0);
dy=myfun(t,y)
u=y(1);
v=y(2);
dy=zeros(2,1);
dy(1)=sin(u*v);
dy(2)=5*u-3*v;
Best wishes
Torsten.

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