Error with ode45

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...

Answer 1

[Star Strider]

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

.