Re: Convert expression to polynomial

*To*: mathgroup at smc.vnet.net*Subject*: [mg70437] Re: Convert expression to polynomial*From*: Helen Read <hpr at together.net>*Date*: Mon, 16 Oct 2006 02:35:27 -0400 (EDT)*References*: <egsd96$cj7$1@smc.vnet.net>

Diana wrote: > Math folks, > > I am generating a list of partial sums which look like: > > x = 1 + (-t + t^2)^(-1) + 1/((-t + t^2)^2*(-t + t^4)) + 1/((-t + > t^2)^4*(-t + t^4)^2*(-t + t^8)) > > I then try to calculate the PolynomialQuotient[Numerator[x], > Denominator[x], t], etc., and I get an error saying that x is not a > polynomial function. > > I tried to find the command to put everything over a common > denominator, but was unable to find this. Can someone help? The function you are looking for is called Together -- Helen Read University of Vermont