(Chapter 1: Review) 1.19 A function fis odd±f²x()=²fx³x´Domf±The graph of y=is symmetricabout the origin.ExampleIf =x3, then fis odd, because ±x²R, f±x=±x3=±x3=±The “snake” graph of y±=x3below is symmetric about the origin. This means that, if the entire graph is rotated 180±about the origin, we obtain it again. If the graph has a y-intercept, it must be at the origin.
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