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this is all i could gather i dont know how to find the period or amplitude 

 

http://prntscr.com/mbnjcl

 Jan 24, 2019
 #1
avatar+18754 
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Sin wave     sin (x) is parent wave

 

Period = 24 hours     2pi/24 = pi/12        now sin (pi/12 *x)

 

Amplitude = (8.3-0.4) / 2 = 3.95          now   3.95 sin ( pi/12 *x)

 

Midline shifted UP 4.35                  now     3.95 sin (pi/12 *x) + 4.35

 Jan 24, 2019
edited by ElectricPavlov  Jan 24, 2019
 #2
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i got it thanks 

 

it should end up looking like this http://prntscr.com/mbnq1b   ?

 

 

with the editing

 Jan 24, 2019
edited by Guest  Jan 24, 2019
 #4
avatar+18754 
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Yah, flipping back and forth betwen the screenshot and the Forum, I sometimes get the numbers incorrect.....  cheeky

ElectricPavlov  Jan 24, 2019
 #3
avatar+18754 
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Here is pic:

 

 Jan 24, 2019

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