Date: Jan 5, 2013 10:49 AM
Author: Qiming
Subject: get coefficients from a symbolic polynomial

Hi all:

I have a question of how to get coefficients from a symbolic polynomial.

Suppose the polynomial is "y=x+2x^2+3x^3", we want the result to be: [0,1,2,3];

Note that the entire polynomial is symbolic, that is, even the coefficients 0, 1, 2, 3 are in symbolic form instead of numbers, so I cannot use 'sym2poly(y)' to get the coefficients.

I think one possible way is to convert the symbolic into strings, but I test some functions, none of them work.

How to do this?

Any help is appreciated.