11.3.3 An upper bound for the positive real roots of a polynomial
The posubLMQ command uses
the Local Max Quadratic (LMQ) Akritas-Strzebonski-Vigklas algorithm
to find upper bounds for the positive real roots of polynomials.
posubLMQ takes
P, a polynomial.
posubLMQ(P) returns a
(non-optimal) upper bound for the positive real roots of P.