Test case 3 appears to be incorrect.
You were correct. It has been fixed.
hmm, interesting problem.
I think D*atan(sqrt((1-D.^2)/D.^2)) should actually be D.*atan(sqrt((1-D.^2)./D.^2))
Thanks for the catch.
Project Euler: Problem 5, Smallest multiple
Whether the input is vector?
Create a matrix X, where each column is a shifted copy of the vector v
Multiply 2 numbers
Combined Ages 1 - Symmetric, n = 3
Divisible by 9
Scrabble Scores - 11
Divisible by 4
Lights Out 11 - 5x5, with wrapping, x moves
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