The function is .

The graph of is the graph of is streched horizontally by a factor of and reflected about the -axis.

The period of the function is .

Find vertical asymptotes.

Tangent function has asymptotes equations:  and .

Hence the vertical asymptotes are and .

and

Table : 

Construct a table containing -intercepts and intermediate points for for one period .

Function	vertical asymptote	intermediate point	x-intercept	intermediate point	vertical asymptote

Graph:

1. Draw a coordinate plane.

2. Plot the coordinate points.

3. Then sketch the graph of , connecting the points with a smooth curve.

Graph of the function is