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2-12.

Compare whether each function below is an even function, an odd function, or neither.

  1. Definition of an even function:
    Definition of an odd function:


    it's even!
     (a) it's NOT odd.

  1. Refer to hint and steps in part (a).

  1. Refer to hint and steps in part (a).

  1. Even functions are symmetrical over the -axis.
    Odd functions are symmetrical about the origin.

    Sketch a graph of and describe the symmetry.