甘
2. 13 marks]
Consider the graph of the function f(x) = 2 sin x ,
0 < x < 20 . The graph of f intersects the line
y = -1 exactly twice, at point A and point B. This
is shown in the following diagram.
frequency
Consider the graph of g (x) = 2 sin px,
x
y=-1
B
0 < x < 23, where p > 0.
Find the greatest value of p such that the graph
of g does not intersect the line y = -1.
px 7 = 21
2 sinx=-1
sinx=
-/
[Total marks: 3
26.
p=3
[ pox to the
3. [8 marks]
X=30°
hich fl
2.62 +1.
