Two cos/sin wave graphing question

  • Thread starter rought
  • Start date
  • #1
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Homework Statement



2ikxo53.jpg


The Attempt at a Solution



For #3 I need to finde the cos graph equation here's what I got: shift to the right 2, Amplitude = 3, b = π/2

equation: y=3cosπ/2(x-2)

I'm just not sure if i have it in the right format or if I'm even right


Attempt for #4 Amplitude=2 Shift left = 1 Shift up= 3

jugzna.jpg
n data[/b]


I'm just not sure if I am doing it right for both of them
 

Answers and Replies

  • #2
290
2
I'm just not sure if i have it in the right format or if I'm even right
You're solutions appear to be right, but I'm not sure what you mean by the right format.
 
  • #3
29
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For your first solution, you are correct, but if when you say "format" you are referring to a simpler form, you may wish to use the identity [tex]cos(x - \pi) = -cos(x)[/tex] to simplify the equation.
 

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