I need to solve four differential equation with four unknown variable simltaneously . how can i do that in matlab?
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four differential equation are:-
dA/dt = 3*(K4*B - K3*A^2*D^3 )+constant
dB/dt = K3*A^2*D^3 - K4*B
dC/dt = K1*D^n - K2*C
dD/dt = K1*D^n + K2*C + 2*(K4*B - K3*A^2*D^3)
4 unknown variable = A,B,C,D
and all K and n are constant.
initial condition :- A(t=0) = 0; B(t=0) = 0; C(t=0) = 0; D(t=0) = 12;
time range (0 to 48 hrs)
time interval = 1hrs
i need a graph of A,B,C,d with time .
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Walter Roberson
2019-7-26
You need to define what it means to "optimize" those things.
Is the +constant a known constant?
回答(2 个)
Matt J
2019-7-26
In all likelihood, your problem description is incomplete. As written currently, the problem has the trivial solution,
K1=K2=K3=K4=n=0
A(t)=12
B(t)=0
C(t)=0
D(t)=t*constant
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