Consider the outer product X :$=$ xx$$

$,$ x in R

n

$,$ where R

n denotes the set of all n $\backslash$times $1$ vectors

with real entries. Without using any loops $($such as for, while, if else$),$ we want to write a

MATLAB function named SumOuterProduct.m that takes an arbitrary vector x in R

n as

input and outputs the scalar s$,$ equal to the sum of all entries on or above the main diagonal

of the matrix X