An oscilloscope is a device that presents pictures of sound waves.The function .....
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An oscilloscope is a device that presents pictures of sound waves.The function .....

[From: ] [author: ] [Date: 12-08-09] [Hit: ]
001414 when x = 1/800 and when x = 3/800,-0.001414 when x = 5/800 and when x = 7/800.nice problem,......
An oscilloscope is a device that presents pictures of sound waves.The function y=0.002sin(200piex) describes the sound produced by a tuning fork, where x represents the time in seconds.
a)What is the amplitude of the given function?
b)What is its period?
c)Copy and complete this table, finding values of y to four decimal places:

x| 0 |1/800 |2/800 |3/800 |4/800 |5/800 |6/800 |7/800 |8/800
y|___ | ____ | ____ | ____ | ____ | ____ | ____ | ____ |

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amplitude is the 0.002 in front of sin,
period is 2π / 200π = 1/100

notice 8/800 = 1/100, so you're looking at 1 period divided into 8 parts
so y = 0 when x = 0, 4/800, and 8/800.

halfway between those sine hits its high and low, so
y = 0.002 when x = 2/800 and y = -0.002 when x = 6/800

and halfway between those the value of sine is ±½√2 (times the amplitude)
so 0.001(1.414) = 0.001414 when x = 1/800 and when x = 3/800, and
-0.001414 when x = 5/800 and when x = 7/800.

nice problem, no calculator needed (if you learned math BC)
1
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