1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Trig functions behaviour

  1. Aug 30, 2005 #1
    Hi just need a little help with the behaviour of this trig function

    [tex] y=-3\cos (2x-\frac {\pi} {6}) +1 [/tex]
    I converted the pi over 6 to degrees and got -30

    need to state the period, amplitude, max/min values, range, domain, horizontal phase shift, and vertical dispacement.

    So far after rearranging the the equation i have

    period= [tex] pi [/tex]
    range= ????
    amplitude=?????
    domain= all values XER
    horizontal phase shift= 15 degrees left
    vertical displacement= up 1
    max\min ??? :redface: not sure how to figure this out from the equation i tried graphing using the graphing calculator but it wont give me the values for max and min. Therefore I cannot solve for amplitude yet and same with range.

    CAN SOMEONE PLEASE HELP ME JUST NEED HELP WITH THE MAX AND MIN THANKS :blushing:
     
  2. jcsd
  3. Aug 30, 2005 #2
    I got
    max = 4, min = -2
    amplitude = 3
    range = {y:-2 <= y <= 4}

    is this correct or have i done something wrong..please check and reply soon! :blushing:
     
  4. Aug 30, 2005 #3

    Fermat

    User Avatar
    Homework Helper

    what are the max and min values of the cos function?
    Use that to figure out the max and min values of y.
     
  5. Aug 30, 2005 #4

    Fermat

    User Avatar
    Homework Helper

    yes, those are correct.
     
  6. Aug 30, 2005 #5
    is everything else correct too the period domain and shifts?
     
  7. Aug 30, 2005 #6

    Fermat

    User Avatar
    Homework Helper

    Yes - everything else looks ok.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Trig functions behaviour
  1. Trig Function (Replies: 4)

  2. Trig Function (Replies: 7)

Loading...