Input x is the sampled signal vector, may have both AC and DC components. Output y should not contain any DC component.
Input x = [ 1 2 3 2 1 2 3]
Output y = [ -1 0 1 0 -1 0 1]
The Test Suite is not demonstrating removal of a DC component, as there is no way to identify the AC component in any of the tests! For example, Test 3 has x = 0:100, and from this we are supposed to obtain signalMean = 50. But without any observations to show that at earlier & later times the signal is decreasing with time, like x = [2 1 0:100 99 98], we have no way to know that more observations wouldn't have revealed, say, x = [2 1 0:100 101 102], for which signalMean = 51. And indeed we could get any arbitrary signalMean based on the limited observations in this Test Suite.
Angle between two vectors
intersection of matrices
Change the sign of even index entries of the reversed vector
surface of a spherical planet
Have you seen any Spindromes recently?
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