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Problems
Mathematics
Mathematics
Problem
1.
a
Draw the graph of
y
=
cos
3
x
y = \cos 3x
y
=
cos
3
x
for
0
≤
x
≤
2
π
0 \le x \le 2\pi
0
≤
x
≤
2
π
. 2.
b
Find the value of
y
y
y
when
x
=
3
π
4
x = \frac{3\pi}{4}
x
=
4
3
π
. Mark this point on your graph.
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