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].
Times 2 - START HERE
Test if a Number is a Palindrome without using any String Operations
2 b | ~ 2 b
Reindex a vector
Calculate the derivative of a polynomial
inner product of two vectors
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