OK. I'll bite. Where did this formula come from?
Just from calculating a number of values and figuring out the pattern.
That's quite the pattern to figure out...
Finding Perfect Squares
Return elements unique to either input
Return 'on' or 'off'
MATCH THE STRINGS (2 CHAR) very easy
Rounding off numbers to n decimals
Find the mean of a 2-D matrix after excluding elements of specified sub-matrix
Get a new matrix by mapping each element of an arbitrary-sized input matrix using lookup table
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