Implementing Heun's first order ODE

2017 4 13
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This what I have so far
function[t,y]=heun(f,a,b,h,y0)
n=(b-a)/h;
t=[a];y=[y0];
for k=2:n+1,
t=[t; a+(k-1)*h];
y=[y; y(k-1)+h*f(t(k-1),y(k-1))];
end
But I need it to do the corrector cycle equations to make the y values more accurate. This is the formula for corrector cycle
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Kenny Dang
Kenny Dang
2017-4-13

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