MODERATE EXERCISES

(1) Graph the following functions by plotting specific points.

 (a) y = 0.4cos x

 (b) y = tan (x/4)

 (c) y = sin (x)

(a) y = 0.4cos x

x	y
-	-0.4
-2	-0.16646
-/2	0
-1	0.21612
0	0.4
1	0.21612
/2	0
2	-0.16646
	-0.4

(b) y = tan (x/4)

x	y
-6	-14.101
-3/2	-2.4142
-4	-1.5574
-	-1
-/2	-0.41421
0	0
/2	0.41421
	1
4	1.5574
3/2	2.4142
6	14.101

(c) y = sin(x)

x	y
-2	0
-7/4	/2
-3/2	1
-1	0
-1/6	-1/2
0	0
1/6	1/2
1	0
3/2	-1
7/4	-/2
2	0