The problem asks to graph the function $y = \cos(\frac{\pi}{6}x)$.

AnalysisTrigonometryCosine FunctionGraphingPeriodAmplitudePhase Shift
2025/3/16

1. Problem Description

The problem asks to graph the function y=cos(π6x)y = \cos(\frac{\pi}{6}x).

2. Solution Steps

The general form of a cosine function is y=Acos(BxC)+Dy = A\cos(Bx - C) + D, where:
- A is the amplitude
- B is related to the period (Period = 2πB\frac{2\pi}{|B|})
- C is related to the phase shift (Phase shift = CB\frac{C}{B})
- D is the vertical shift
In our case, y=cos(π6x)y = \cos(\frac{\pi}{6}x). Comparing with the general form:
A=1A = 1
B=π6B = \frac{\pi}{6}
C=0C = 0
D=0D = 0
Amplitude: A=1A = 1
Period: 2πB=2ππ6=2π6π=12\frac{2\pi}{|B|} = \frac{2\pi}{\frac{\pi}{6}} = 2\pi \cdot \frac{6}{\pi} = 12
Phase shift: CB=0π6=0\frac{C}{B} = \frac{0}{\frac{\pi}{6}} = 0
Vertical shift: D=0D = 0
The cosine function starts at its maximum value. In this case, the maximum value is

1. Since the period is 12, we can find key points for one cycle:

- x = 0: y=cos(π6(0))=cos(0)=1y = \cos(\frac{\pi}{6}(0)) = \cos(0) = 1
- x = 124\frac{12}{4} = 3: y=cos(π6(3))=cos(π2)=0y = \cos(\frac{\pi}{6}(3)) = \cos(\frac{\pi}{2}) = 0
- x = 122\frac{12}{2} = 6: y=cos(π6(6))=cos(π)=1y = \cos(\frac{\pi}{6}(6)) = \cos(\pi) = -1
- x = 3124\frac{3 \cdot 12}{4} = 9: y=cos(π6(9))=cos(3π2)=0y = \cos(\frac{\pi}{6}(9)) = \cos(\frac{3\pi}{2}) = 0
- x = 12: y=cos(π6(12))=cos(2π)=1y = \cos(\frac{\pi}{6}(12)) = \cos(2\pi) = 1
Since the x-axis of the provided graph is scaled in terms of π\pi, we need to map these x-values accordingly.
- 0 remains 0
- 3 corresponds to 3ππ\frac{3}{\pi}\pi
- 6 corresponds to 6ππ\frac{6}{\pi}\pi
- 9 corresponds to 9ππ\frac{9}{\pi}\pi
- 12 corresponds to 12ππ\frac{12}{\pi}\pi
The problem asks to graph the function. I am unable to draw it in text format.

3. Final Answer

The function is a cosine function with amplitude 1, period 12, no phase shift, and no vertical shift.

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