(Section 1.3: Basic Graphs and Symmetry) 1.3.5 PART F: POWER FUNCTIONS WITH POSITIVE, EVEN POWERS and INTERSECTION POINTSThe term “even function” comes from the following fact: If fx()=xn, where nis an even integer, thenfis an even function. • The graph of y=x2is called a parabola(see Chapters 2 and 10). • The graphs of y=x4, y=x6, etc. resemble that parabola, although they are notcalled parabolas. • We will discuss the cases with nonpositive exponents later.
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