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Explore two additional tools for identifying the roots of polynomial equations: Descartes' rule of signs, which narrows down the number of possible positive and negative real roots; and the fundamental theorem of algebra, which gives the total of all roots for a given polynomial.
This lecture combined with Lecture 23 are my favorite of all Dr. Sellers' lectures so far. I was so interested in the Fundamental Theorem of Algebra, I looked it up in Wikipedia. I was amazed that I could follow most of the information in the History section (I was mostly interested in who to attribute the Fundamental Theorem to)!
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