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Covert polynomial roots to coefficients

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Converts a list of a polynomials roots to the polynomials coefficients, using FFT.

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Description

The built in function `poly' doesn't work well for large number of roots. The proposed function, which is based on DFT, works well even for very large number of roots.

Required Products MATLAB
MATLAB release MATLAB 7.9 (R2009b)
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