Hi
I am having difficulty understanding the following:
R.<x> = QQ['x']; ((x+sqrt(2))*(x+sqrt(3))).expand()
This gives
x^2 + sqrt(2)*x + sqrt(3)*x + sqrt(2)*sqrt(3)
but how can this be right? My understanding was that 'x' was the indeterminate
of the ring of polynomials over QQ, i.e. the rationals. So how come
the polynomial
has coefficients which are not rational?
--
Robin Hankin
Uncertainty Analyst
[email protected]
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