Graphing transformations of trigonometric functions

All in One Place

Everything you need for JC, LC, and college level maths and science classes.

Learn with Ease

We’ve mastered the national curriculum so that you can revise with confidence.

Instant Help

24/7 access to the best tips, walkthroughs, and practice exercises available.

0/4
?
Examples
Lessons
  1. For each trigonometric function:
    (i) Graph the trigonometric function for one period.
    (ii) State the vertical displacement, phase shift, period, and amplitude.
    (iii) State the domain and the range.
    1. y=2sinπ4(x+3)+1y = 2\sin \frac{\pi }{4}(x + 3) + 1
    2. y=3sec(π2xπ)1y = 3\sec (\frac{\pi }{2}x - \pi ) - 1
    3. y=2sin(4x+4π)3y = - 2\sin (4x + 4\pi ) - 3
  2. For the trigonometric function: y=tan(  x3π6  )y = - \tan \left( {\;\frac{x}{3} - \frac{\pi }{6}\;} \right)
    i) Graph the trigonometric function for two periods.
    ii) State the domain and the range.
    Topic Notes
    ?
    After learning all the graphs of basic trigonometric functions, in this lesson, we are going to go a little bit further on how the graphs will be transformed as the functions change. The general form for the equation of trig functions is y = f [B(x + c)] + D, where f refers the trig function; A refers to the amplitude/steepness; B represents the period of the graph; C refers to phase shift (left or right) and D represents vertical shift (up or down). We will learn how to graph the trig function for multiple periods; state the vertical displacement, phase shift, period and amplitude; and also find the domain and range of the transformed functions.