Given the vectors x and y as input, multiply the vectors and return the summation of its elements.
x = [1 2 3 4];
y = [4 3 2 1];
x * y = [4 6 6 4];
z = 4 + 6 + 6 + 4 = 20
Back to basics 8 - Matrix Diagonals
Make a random, non-repeating vector.
sum of non-primes
Finding perimeter of a rectangle
UICBioE240 problem 1.16
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