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Polynomial roots

  1. Jan 20, 2008 #1


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    A few of the (assumed to be good) textbooks on College Algebra discuss the use of Descartes Rule of Signs, and a test for upper and lower bounds for real zeros for polynomial functions; but these ideas are never proved in the books that I found. In which college course, and in which Mathematics textbooks are proofs for these ideas found?
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  3. Jan 20, 2008 #2

    Gib Z

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    Only rigorous proof i found, it goes for 7 pages.

    http://homepage.smc.edu/kennedy_john/POLYTHEOREMS.PDF [Broken]
    Last edited by a moderator: May 3, 2017
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