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Error with ode45

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Mohith S
Mohith S 2021-5-14
回答： Star Strider 2021-5-14
function dy = f(~,y)
% y=[9,100]; dont overwrite y
D=0.00000001;
F=96485;
Z=0.000000016;
R=0.08206*298;
C=0.05;
J=-((D*Z*F*C)/R);
dy = J.*y;
t=[0 5];
inity = 1;
[t,y]=ode45(@f, t, inity);
plot(t,y)
end
For this code im getting error like this,f(~, y)
f(~, y)
↑
Error: Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters.
Please help me to correct the code...

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采纳的回答

Star Strider
Star Strider 2021-5-14
Ran in:
Supply the ‘t’ argument even if the code does not use it.
Try this —
t=[0 5];
inity = 1;
[t,y]=ode45(@f, t, inity);
plot(t,y)
function dy = f(t,y)
% y=[9,100]; dont overwrite y
D=0.00000001;
F=96485;
Z=0.000000016;
R=0.08206*298;
C=0.05;
J=-((D*Z*F*C)/R);
dy = J.*y;
end
.

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