what's wrong my code about ode model

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기훈 강
기훈 강 2023-6-9
评论： Walter Roberson 2023-6-9
I had to training course 'solve ordinary differential equation in MATLAB online course'
and I wrote that one but this code doesn't run
how can I modify that??
The first error has line 3 ' C=Y(1)'
function dY=ESdynamics(t,Y,r_C,Cprime,r_max,k,r_A,delta_A,r_I,delta_I,r_E,Eprime,r_S,Sprime,beta,gamma)
C=Y(1);
A=Y(2);
I=Y(3);
E=Y(4);
S=Y(5);
f(C)=min(r_C*(1-C/Cprime),r_max);
dC=f(C)*C-k*C*E;
dA=r_A*C-delta_A*A;
dI=r_I*C*E-delta_I*I;
dE=-r_E*(E-Eprime)+beta*A*I*E*S-gamma*E*S;
dS=-r_S*(S-Sprime)-beta*A*I*E*S+gamma*E*S;
end
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Walter Roberson
Walter Roberson 2023-6-9
Note that ode45 and related functions will produce incorrect answers when min() or max() are used.

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