9
votes
2answers
93 views

What are Root objects with multiple polynomials?

In Mathematica 9 a new flavor of Root object with multiple polynomials was introduced. For example, ...
5
votes
5answers
304 views

Series expansion in terms of Hermite polynomials

I am trying to expand a polynomial in terms of orthogonal polynomials (in my case, Hermite). Maple has a nice built-in function for this, ChangeBasis. Is there a ...
6
votes
2answers
400 views

Why does Expand not work within a function?

I'm writing this fairly simple function: ...