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Integration of a function

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aymos
aymos 2018-6-19
关闭： MATLAB Answer Bot 2021-8-20
Hi I have function:
dy/dt = A(1-y/B)*exp(C*y)
y(at t=0) = 0 y (at t = infinity) = 1
A,B,C are constants and y is an unknown function of t.
I would like to solve for y and plot it as function of t. (t is time). This will allow me to compare with experimental results.
Can you please help, I am not able to get started.
I look forward to your response
  2 个评论
aymos
aymos 2018-6-19
Thanks Torsten !...
I am trying to use runge kutta 4th order and ode45, but Im not able to implement the code ! That is why I posted the question...

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回答（1 个）

Torsten
Torsten 2018-6-19
function main
A=...;
B=...;
C=...;
fun=@(t,y)A*(1-y(1)/B)*exp(C*y(1));
tspan=[0 1];
y0=0;
[t,y]=ode45(fun,tspan,y0);
plot(t,y)
end
  2 个评论
aymos
aymos 2018-6-19
Hi Torsten ! Thanks...
Can you please tell if I have to change the range of t from 1e-5 to 1, how shall I do it ?

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