Which of the following functions is represented by the graph
Which of the following functions is represented by the graph below? y = 3sin4x y = 4sin3x y = 3sin y = 3sin6x
Solution
Use the form asin(bxc)+d to find the variables used to find the amplitude, period, phase shift, and vertical shift.
a=4
b=3
c=0
d=0
Find the amplitude (|a|).
Amplitude: 4
Find the period using the formula 2|b|.
Period: 23
Find the phase shift using the formula cb.
Phase Shift: 0
Find the vertical shift (d).
Vertical Shift: 0
List the properties of the trigonometric function.
Amplitude: 4
Period: 23
Phase Shift: 0 (0 to the right)
The trig function can be graphed using the amplitude, period, phase shift, vertical shift, and the points.
Amplitude: 4
Period: 23
Phase Shift: 0 (0 to the right)
Vertical Shift: 0
x f(x)
0 0
pi/6 4
pi/4 0
pi/2 4
2pi/3 0
so, the answer is B.) 4sin(3x)
