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# rk4 - k3 = h func(t(i,1.5*h,w,i.5*k2 k4 = h func(t(i,1...

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function [t,w] = rk4(func,a,b,h,initval) % % Runge Kutta 4th order % n = (b-a)/h; t(1,1) = a; w = initval; w for i = 1:n k1 = h * func(t(i,1),w(:,i)); k2 = h * func(t(i,1)+.5*h,w(:,i)+.5*k1);
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Unformatted text preview: k3 = h * func(t(i,1)+.5*h,w(:,i)+.5*k2); k4 = h * func(t(i,1)+h,w(:,i)+k3); w(:,i+1) = w(:,i) + (k1 + 2*k2 + 2*k3 + k4)/6; t(i+1,1) = t(i,1) + h; end;...
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