QUESTION 1
The first function is

A function of the form

has amplitude equal to

The amplitude of

is

QUESTION 2
The given function is

A trigonometric function of the form

also has an amplitude of

The amplitude of

is

QUESTION 3
The given trigonometric function is

The amplitude of this trigonometric function is

QUESTION 4.
The given trigonometric function is

The amplitude of this cosine function is
