How can I plot ode 45 for different values of a constant after specific time?
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I want to change the value of del after given time interval.
T = 1:1:3500;
del = 0; % For T=1:1:3100
del = 1; % For T=3100:1:3500
[t,y] = ode45(@f_1,T,C);
This is the only line of the function which contains del.
dy(4,1)=(y(1)*k(1))/V(4) - (y(4)*(k(1) + k(2) + k(3) + del*k_clear))/V(4) + (y(2)*k(2))/V(4) + (y(3)*k(3))/V(4);
I want to plot this graph
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/202649/image.png)
But was able to construct this.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/202650/image.png)
1 Comment
madhan ravi
on 4 Feb 2019
Edited: madhan ravi
on 4 Feb 2019
Share your ode function.Why not?
function dydt = myod(t,y)
.....
if t <= 3100
del = 0;
else
del = 1;
end
.... rest of the code
end
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