How to get the output for the following code into the workspace?
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My code is as follows:
function H = newmain
global b1 b2 b3;
b1=0;
b2=2.0;
b3=0.33;
options=odeset('InitialStep', 0.01, 'MaxStep', 0.01, 'RelTol', 10., 'AbsTol',10.);
[t2,y2]=ode45(@equation,[0:0.05:0.1],[1 2 0], options);
H = [t2 y2]
end
function dy=equation(t,y)
global b1 b2 b3
dy=zeros(3,1);
b1=b1+1-exp(-b3)
b2=b1-y(1)
b3=b1+b2+y(2)
dy(1)=-b1*y(1);
dy(2)=b3*y(1)+b2*y(2);
dy(3)=sqrt(b1)+y(1)+y(3);
end
How can directly get the values of b1 b2 b3 y1 y2 y3 at the same time instant in the workspace?
Thanks!
Answers (1)
Azzi Abdelmalek
on 19 Oct 2012
function dy=equation(t,y)
global c b1 b2 b3 y1 y2 y3
y1=y(1);y2=y(2);y3=y(3);
dy=zeros(3,1);
b1=b1+1-exp(-b3)
b2=b1-y(1)
b3=b1+b2+y(2)
dy(1)=-b1*y(1);
dy(2)=b3*y(1)+b2*y(2);
dy(3)=sqrt(b1)+y(1)+y(3);
c=[c; b1 b2 b3 y1 y2 y3]
add in your main program
global c b1 b2 b3 y1 y2 y3
y1=0;y2=0;y3=0;c=[];
2 Comments
Urvi
on 19 Oct 2012
Azzi Abdelmalek
on 19 Oct 2012
it's just an initialization, not effect
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