INTRODUCTORY EXERCISES

(1)  By plotting points, sketch the graphs of the following functions.

 (a) y = 4sinx

 (b) y = sin 4x

x	y
-	0
-/2	-4
-1	-3.3659
0	0
1	3.3659
/2	4
	0

(b) y = sin 4x

x	y
-1	-0.0698
-1/2	-0.0349
0	0
1/2	0.0349
1	0.0698