I am multiplying two functions, one is a polynomial, and the other is the exact same polynomial, except that all the exponents are negative, e.g. (x+1)(x^(-1)+1). I'd like to get a list that has the coefficient in each degree of the resulting functional, e.g. considering the above example, in degree -1 there is 1, in degree 0 there is 2, and degree 1 there is 1. However, I don't think, for instance, CoefficientList will work for this, since it won't recognize the input as a polynomial. Anyone know how to do this?