Question

How does closure apply when adding/subtracting/multiplying polynomial functions?

Answer 1

Closure?
For any polynomials p(x) and q(x)
p(x) + q(x)
p(x) - q(x)
and p(x)g(x)
are still polynomials...

Answer 2

if you add subtract multiply by a polynomial you get a poolynomial

Answer 3

crud.. I meant
p(x)q(x) for the last one... derp

Answer 4

Hehe, thanks! ::::)

Answer 5

so the set of all polynomials is closed with respect to addition, subtraction, and multiplication. But NOT division.