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

2-105.

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 ✎*y*= cos(3*x*)

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

Compare to *y* = |*x*|.