I'd suggest adding test cases in which n (or abs(n)) is larger than the dimension of x; for example, x is a 4-by-4 matrix and n = 6.
smooth~ basically same idea, my solution however is bit of inflexible.
Will work also for non-square input matrix x.
given 3 sides, find area of this triangle
Great Circle Distance
cos for boss?
Output any real number that is neither positive nor negative
Even or Odd
Find my secret function II
Find my secret function I
Is it a mail?
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