Given an input vector x, remove all elements of x less than 5 .
Input x = [ 1 2 5 7 3 ]
Output y is [ 5 7 ]
Project Euler: Problem 1, Multiples of 3 and 5
Create matrix of replicated elements
Generate a NaN...on purpose
Is this triangle right-angled?
Times 3 problem
Initialize a Natural Number matrix.
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