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http://prntscr.com/mu90bc

 Mar 6, 2019
 #1
avatar+19908 
0

You forgot to include the sin function...

 

2.5 sin (1318 pi x)

 Mar 6, 2019
 #2
avatar+106533 
+1

Frequency  = 1 / period

So

Period = 1 /Frequency =  1 / 659

 

We have the form

 

y = A sin (B x)

 

A = the amplitude = 2.5

 

B =  [ 2pi ] / period  =   2pi / (1/659)   =   1318 pi

 

So....as the guest found....the function is

 

y = 2.5sin (1318 pi * x )

 

 

cool cool cool

 Mar 6, 2019
 #3
avatar
+1

like so?

 

http://prntscr.com/mu99ml

 

 

thank you 

 Mar 6, 2019
 #4
avatar+106533 
+1

Correct...!!!

 

 

cool cool cool

CPhill  Mar 6, 2019

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