numpy.poly (seq) : given a sequence of roots of a polynomial, this function returns the coefficient of the polynomial.
Seq: sequence of roots of the polynomial roots, or a matrix of roots.
Return: 1D array having coefficients of the polynomial from the highest degree to the lowest one.
c  * x ** (N) + c  * x ** (N-1) + ... + c [N-1 ] * x + c [N] where c  always equals 1.
Coefficients of the polynomial: [1. -3. 2. 0.] Above polynomial = 3 2 1 x - 3 x + 2 x
Code # 2:
Coefficients of the polynomial: [1. -11. 46. -92. 88.-32. 0.] Above polynomial = 6 5 4 3 2 1 x - 11 x + 46 x - 92 x + 88 x - 32 x
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