The frequency of the function is .

Where  is the frequency,  is wave length and is speed of the light.

m/s.

.

(a).

Graph :

Graph the function .

Since frequency and the wave length of a periodic wave cannot be negative.

Graph the function in first quadrant.

(b).

End behavior of the graph :

Observe the graph:

.

Support numerically :

Construct a table that shows the values to investigate the function values as of increases. 

Observe the table.

As tends to , approaches .

.

(c).

The function is not continuous.

The function has infinite discontinuity at .

(a). Graph of the function is

(b). End behavior of the graph: .

(c). No, the function has infinite discontinuity at .