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Question 4

Find the amplitude and period of the function
[tex]\[ y = \frac{1}{2} \sin 3x \][/tex]

Give the exact values, not decimal approximations.

Amplitude: [tex]\(\square\)[/tex]

Period: [tex]\(\square\)[/tex]


Sagot :

Let's break down how to find the amplitude and period of the function [tex]\( y = \frac{1}{2} \sin(3x) \)[/tex].

### Step-by-Step Solution

1. Given Function:
[tex]\[ y = \frac{1}{2} \sin(3x) \][/tex]

2. Amplitude:
The amplitude of a sine function [tex]\( y = A \sin(Bx) \)[/tex] is given by the coefficient [tex]\( A \)[/tex] in front of the sine term.
In our function, [tex]\( A = \frac{1}{2} \)[/tex].

Therefore, the amplitude is
[tex]\[ A = \frac{1}{2} \][/tex]

3. Period:
The period of a sine function [tex]\( y = A \sin(Bx) \)[/tex] is determined by the coefficient [tex]\( B \)[/tex] in front of [tex]\( x \)[/tex]. The formula for the period [tex]\( T \)[/tex] is
[tex]\[ T = \frac{2\pi}{B} \][/tex]
In our function, [tex]\( B = 3 \)[/tex].

Therefore, the period is
[tex]\[ T = \frac{2\pi}{3} \][/tex]

### Summary

- Amplitude:
[tex]\[ \frac{1}{2} \][/tex]

- Period:
[tex]\[ \frac{2\pi}{3} \][/tex]

### Final Answer

Therefore, the exact values are:
- Amplitude: [tex]\(\frac{1}{2}\)[/tex]
- Period: [tex]\(\frac{2\pi}{3}\)[/tex]
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