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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