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Home > CALC > Chapter 2 > Lesson 2.3.1 > Problem 2-105

2-105.
  1. Without your graphing calculator, determine if the following functions are even, odd, or neither. Explain how you determined your choice. Then, check your answer with your graphing calculator. Homework Help ✎

    1. y = cos(3x)

You should know by now that y = cosx is an even function. But what about y = cos(3x)? What does the 3 do to the parent graph?

Compare to y = |x|.