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clear;
%inital
ts = 0; % set initial value of x_0
is = 0;
%parameter
tf = 0.03; % stop here
R = 0.5;
L = 0.0015;
%vin and the function
A = 6;
T = 0.00015;
vin = @(t) A * cos(2*pi*t/T);
func = @(t, iout) (vin(t) - iout*R) / L; % define func
for ind=3:16 % choose these carefully
h1=2^(-ind); % set stepsize
[t, iout, exact] = midpoint(func, ts, tf, is, h1);
figure;
plot(exact)
% vout = vin - R*iout;
%
% error = max(abs(exact - vout));
%
% plot(log(h1),log(error),'b*'); % log/log plot stepsize vs error
% xlabel({'Time', '(seconds)'});
% ylabel({'Error'});
% title('MIDPOINT');
% hold on; % for next value to be plotted
end
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