Question

What is the phase shift of a periodic function?

Answer 1

a change in the phase of a waveform

Answer 2

Answer and Explanation :

To find : What is the phase shift of a periodic function?

Solution :

The Phase shift is defined as a horizontal shift in a function in any direction.

Horizontal stretches will change the period of the function and that horizontal shift is called a phase shift or the amount of shift in a wave horizontally.

The phase shift is measured in degrees.

Refer the attached figure below for the pictorial representation of teh phase shift.

In the figure,
`(\pi )/(2) \text{ to } \pi` is showing the phase shift.

Example - Taking a general example of sin function

`y = A \sin(B(x + C)) + D`

In this the phase shift is at C (positive is to the left).