May 2014
Beginner
312 pages
7h 21m
English
Content preview from Algebra II Workbook For Dummies, 2nd Edition
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Chapter 7
Plugging In Polynomials
In This Chapter
Locating the intercepts in polynomials
Figuring out where a polynomial function changes signs
Assembling all the information you need to graph a polynomial curve
Looking for roots with clues from Descartes — and others
Doing division synthetically and taking other shortcuts
Building up polynomials from their roots
A polynomial function is a well-mannered function with nice, predictable habits. The graph of a polynomial function is always a smooth curve with no abrupt changes in direction or shape. The equation of a polynomial function has only whole-number exponents on the variables.
A polynomial function has the form f(x) = anxn + an–1xn–1 + an–2xn–2+ · · · + a1x1 + a0x0, where n is a whole number and any an–i is a real number. The ...
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