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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. No calculator iconExplain 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|.