+0  
 
+1
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avatar+124 

Hey everybody ^.^ Hope all is well! 

I am really struggling with some math problems and would appreciate all the help available! 

 

https://www.screencast.com/t/Mor3Q8cNX

Supergirl  Nov 26, 2017
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2+0 Answers

 #1
avatar+79894 
+3

y =  4 sin [ ( pi/ 4)x  - pi/2 ]  - 3 

 

Look at the graph here : https://www.desmos.com/calculator/qrjaot4u81

 

The rate of change will be positive  from  2 < x < 4  and then on every interval given by

(  8x , 8x + 4)

where x is a natural number

 

The rate of change will be negative  from  4 < x < 8    and then on every interval  given by

( 8x + 4, 8x + 8) 

where x is a natural number

 

The rate of change will be 0   at every  4x      where x is a natural number

 

 

cool cool cool

CPhill  Nov 26, 2017
 #2
avatar+124 
+2

Thank you! 

Supergirl  Nov 26, 2017

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