(a)
To find:The sinusoidal regressionequation for the given data and its graph on a
(a)
Answer to Problem 23E
The sinusoidal regression equation for the given data is
Explanation of Solution
Given information:The table given below shows the Turning Fork data.
Calculation:
To find the sinusoidal regression equation of the given data, use graphing calculator.
Step 1: Press
Step 2: List the values for time in the L1 column and values for pressure in the L2 column.
Step 3: Press the keystrokes
Step 1: Press
Step 2: Press
Step 3: Set the window at
Figure (1)
Therefore, the sinusoidal regression equation for the given data is
(c)
To find: The frequency and the musical note produced by the turning fork.
(c)
Answer to Problem 23E
The required frequency is 392.9 Hz and the musical not is “G”.
Explanation of Solution
Given information:The table given below shows the frequencies of note.
Note | Frequency (Hz) |
C | 262 |
277 | |
D | 294 |
311 | |
E | 330 |
F | 349 |
370 | |
G | 392 |
415 | |
A | 440 |
466 | |
B | 494 |
C (next octave) | 524 |
Calculation:
From part (a), the sinusoidal regression equation for the given data is
The general equation for the sine function is given by,
On comparing both the equations, the period of the function is:
The frequency is the inverse of the period. So,
From the table it can be observed the frequency of note “G” is 392 Hz.
Therefore, the required frequency is 392.9 Hz and the musical not is “G”.
Chapter 1 Solutions
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