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Unformatted text preview: er turning point and start decreasing so it can get back down to
the final xintercept at x = 2 . Since we know that the graph will decrease without bound at this
end we are done.
Here is the sketch of this polynomial. The process that we’ve used in these examples can be a difficult process to learn. It takes time to
learn how to correctly interpret the results.
Also, as pointed out at various spots there are several situations that we won’t be able to deal with
here. To find the majority of the turning point we would need some Calculus, which we clearly
don’t have. Also, the process does require that we have all the zeroes and that they all be real
numbers.
Even with these draw backs however, the process can at least give us an idea of what the graph of
a polynomial will look like. © 2007 Paul Dawkins 262 http://tutorial.math.lamar.edu/terms.aspx College Algebra Finding Zeroes of Polynomials
We’ve been talking about zeroes of polynomial and why we need them for a couple of sections
now. We haven’t, however, really talked about how to actually find them for polynomials of
degree greater than two. That is the...
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This note was uploaded on 06/06/2012 for the course ICT 4 taught by Professor Mrvinh during the Spring '12 term at Hanoi University of Technology.
 Spring '12
 MrVinh

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