Index exceeds the number of array elements. Index must not exceed 1.

Error is occuring in my delta2_new variable, line 6 in this portion of my code. Unsure how to fix it and get my code running.

while error > epsilon
            alpha = (3/10) - (lambda/120);
            beta = (37/315) - (lambda/945) - ((lambda^2)/9072);
            gamma = 2 + (lambda/6);
            u0(i) = (h1*U) / (h1 - ((x*(h1-h2))/L) - ((alpha*delta2_old)/beta));
            delta2_new = sqrt( ((d2(i-1)^2) + (2*v*(beta*gamma)/u0(i))*(delta_x)) / (1 + (2*(2 + (alpha/beta))) * ((u0(i) - u0(i-1))/u0(i)))   );
            tau(i) = (beta/gamma) * ((mu*u0(i)) / delta2_new);
            delta = delta2_new / beta;
            delta1(i) = alpha*beta;
            error = abs((delta2_new - delta2_old)/delta2_new);
            delta2_old = delta2_new;
end

[Jon]

It's hard to tell what is going on here with the subscripts. Can you please also provide the code where your variable i and other variables d2, u0, etc are assigned

[Torsten]

Please post executable code. With this incomplete code, nothing can be said concerning your error.

And it would help if you explain in a few words what you are trying to do.

Answer 1

[David Hill]

What is i?

delta2_new = sqrt( ((d2(i-1)^2) + (2*v*(beta*gamma)/u0(i))*(delta_x)) / (1 + (2*(2 + (alpha/beta))) * ((u0(i) - u0(i-1))/u0(i)))   );
%you are indexing into a variable (i=2) that only has one element. Check
%the sizes of all your variables (u0, d2). u0 is likely your problem.