Add tests with 100,1000...
Solutions with ceil are wrong.
function out = HowManyDigits(in)
out = floor(log10(in))+1;
Make the vector [1 2 3 4 5 6 7 8 9 10]
Return the 3n+1 sequence for n
vectorization in N
Return elements unique to either input
04 - Scalar Equations 1
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