Find the fourier transform of a given input vector
for ex a=[1 2 3 4]
then y=[ 10.0000 + 0.0000i -2.0000 + 2.0000i -2.0000 + 0.0000i -2.0000 - 2.0000i]
Back to basics 21 - Matrix replicating
Getting the absolute index from a matrix
Count up then down
Add two numbers
Sum of diagonals elements of a matrix
Maximum value in a matrix
Area of a circle
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