how to do summation

Hello I just starded using matlab for my disertation (I used it before but nothing very advanced). I am trying to do this sumation and I can't find the right way this is how it is written:

OTM(i) = sum(where j= from i to 12) F(j)*(H(j)-H(i));

I would realy apreciate this.

Answer 1

[Walter Roberson]

sum(F(1:12) .* (H(1:12) - H(i)))