Input x is the sampled signal vector, may have both AC and DC components. output vector y should have AC components removed then change sign alternately, for example, input [1:5], output [3 -3 3 -3 3].
Indexed Probability Table
Divisors of an integer
Return area of square
peta to nano (x-ray)
Generate one sample of uniform random numbers between -pi and +pi
given 3 sides, find area of this triangle
Given a number N, find the smallest prime P>N
Use of regexp
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