Given a vector of positive integers
a = [ 3 2 4 ];
create the matrix where the i th column contains the vector 1:a(i) possibly padded
b = [ 1 1 1
2 2 2
3 0 3
0 0 4 ];
How to find the position of an element in a vector without using the find function
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Sum of first n terms of a harmonic progression
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Wind outward from the center ...
Sophie Germain prime
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