The following table shows values of a periodic functionf(x). The maximum value attained by the function is5.

x

0

4

8

12

16

20

24

f(x)

5

0

5

0

5

0

5

(a)What is the amplitude of the function?

The amplitude of this function is?

(b)What is the period of the function?

The period of this function is?

(c)Find a formula for this periodic function.

Enclose arguments of functions in parentheses. For example,sin(2x)

f(x)=?