Power or Sum first

In the following equation do i perform the sum first or the power of 2 first?

(sum(k.*cos(b)).^2)

Answer 1

[Roger Stafford]

As it stands, the summation occurs first, followed by taking the square of that sum. You should be able to determine that from the parentheses.

In case 'b' is more than a one-dimensional array, there will of course be many sums and the square of each one is taken.