+0  
 
0
61
3
avatar+1690 

1.

 

2.

 

thankyou for reviewing my answers! Have a good day(:

 Feb 19, 2020
 #1
avatar+219 
0

Hey...it looks like nothing has appeared in the question...maybe something is wrong?

 Feb 19, 2020
 #2
avatar+109740 
+2

First one  ....correct  !!!

 

 

Second one

 

Notice  that  we  can write this as  :

 

f(x)  =  Asin B(x - C) + D

 

f(x)  =  33 sin 7 (x  -  pi/84) + 33

 

Only B affects the period......

 

"B"  tells us how many periods are in 2pi sec

 

So  we can find the period (in sec)  thusly :

 

B =   2pi / period

 

7  = 2pi / period      rearrange as

 

period  =  2pi/7  ≈  .897 sec  =  .90  sec   →  correct  !!!!

 

 

cool cool cool

 Feb 19, 2020
 #3
avatar+1690 
0

Awesom! Thank you for checking them for me smiley

jjennylove  Feb 20, 2020

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