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The value of is  

  1. Without a calculator, find: and .

    Is even, odd or neither?

  2. Use a graph to justify your conclusion.

    but, since is odd,

    therefore, is even.

Compute without a calculator

Use the eTool below to examine the graph.
Click the link at right for the full version of the eTool: Calc 4-22 HW eTool