Unit 6: periodic functions and trigonometry
lesson 1: exploring periodic data

1. use the given graph. determine the period of the function.

a. 4
b. -2.5
c. 2
d. 8

for questions 2 and 3, determine whether the function is periodic. if it is, find the period.

2.

a. periodic; about 6
b. periodic; about 3
c. periodic; about 12
d. not periodic

3.

a. periodic; about 3
b. not periodic
c. periodic; about 2
d. periodic; about 1 1/2

4. find the period and the amplitude of the periodic function.

a. 1; -1
b. 1; 0.5
c. 2; 0.5
d. 0.5; 2

5. the screen below shows the graph of a sound recorded on an oscilloscope. what are the period and the amplitude? (each unit on the t-axis equals 0.01 seconds.)

a. 0.05 seconds; 4.5
b. 0.05 seconds; 9
c. 0.025 seconds; 9
d. 0.025 seconds; 4.5

! i don't get this at