Create an n-by-n matrix with elements ranging from 1 to n^2 in a rectangular spiral pattern.
Example if n = 5 :
21 22 23 24 25
20 7 8 9 10
19 6 1 2 11
18 5 4 3 12
17 16 15 14 13
Least common multiple of many numbers
Project Euler: Problem 2, Sum of even Fibonacci
More luck than brains
Angle between two vectors
Make a logical diamond using GALLERY function
Set some matrix elements to zero
Find all the zeros of sinus , cosinus and tangent in a given interval
Get the elements of diagonal and antidiagonal for any m-by-n matrix
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