How can I change this explicit method code to the implicit method code?
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f = @(t,y) -100000*y + 99999*exp(-t);
t0 = 0; y0 =0;
h = 0.01; tn = 2;
n = (tn-t0)/h;
t(1)=t0; y(1)=y0;
for i=1:n
t(i+1) = t(i) + h;
y(i+1) = y(i) + (f(t(i),y(i))*h);
end
plot(t,y)
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