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
Find the sum of all the numbers of the input vector
Find the two most distant points
Create a two dimensional zero matrix
Determine the square root
Skip by a multiple
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