Calculate argmin for the function in matlab

I want to find the value of the following using matlab:

where . S is the set of the numbers as given. .

Answer 1

[John D'Errico]

What have you tried? Why not? And why did you feel you needed a picture of the vector S? That just makes us type it in. Not gonna happen. Just because you want fancy formatting makes it more difficult for you to get help?

S = sort(randi(100,[1,10]))

S = 1×10

5 19 19 37 54 60 61 65 75 76

Next, learn to use VECTORS. Don't number your variables. Silly, becuase we know you have been using MATLAB for a while.

It looks like you want to find the closest elements in S to each of the members of a. Then form the sum.

a = [10:20:100]

a = 1×5

10 30 50 70 90

[~,minind] = min((a' - S).^2,[],2);
V = S(minind)

V = 1×5

5 37 54 65 76

sum(V)

ans = 237