Question

Sketch the graph of the function. (Include two full periods.)

y = 1/3 cos x

Answer 1

Step 1:

The function is .

Compare the function with .

and .

Amplitude : .

Period : .

Construct the table of values in the interval :

Step 2:

Graph the function :

(1) Draw the coordinate plane.

(2) plot the points.

(3) connect the points to a smooth curve.

 Solutions :

Graph of the function :