Abstract

In Machchhar and Elber (2016), an algorithm is presented for computing all real roots of univariate scalar Bernstein polynomials by subdividing the polynomial at a known root and then factoring out the root from the polynomial, resulting in a reduction in problem complexity. This short report presents a speed-up over Machchhar and Elber (2016), by circumventing the need for subdividing the polynomial each time a root is discovered, an O(n2) process, where n is the order of the polynomial. The subdivision step is substituted for by a polynomial division. This alternative also has some drawbacks which are discussed as well.

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