MATLAB: How to access array elements in for loop

arrayscell arraysfor loopmatrix array

How do I access array elements in for loop? Below is what I tried but had error. Any suggestion is appreciated.
Halis
K = [2 5];
for i = 1:2;
K(i) = K(1,i);
B(i)  = 2*K(i);
C = 4*B(i);
disp(C);
D = C(1,1)
E = C(1,2)%error:Attempted to access C(1,2); index out of bounds because numel(C)=1.
F = 3*D^2 + 4*E^2
G = 3*D*E + 4*D*E
end

Best Answer

K = [2 5]; 
for i = 1:2; B(i) = 2*K(i); end
D = B(1)
E = B(2)
F = 3*D^2 + 4*E^2
G = 3*D*E + 4*D*E
This could be simplified to
K = [2 5];
B = 2*K;
F = [3 4]*B.^2'; % == 3*B(1)^2 + 4*B(2)^2
G = 7*prod(B); % == 3*prod(B) + 4*prod(B);
Related Question