Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Sine and cos functions

  1. Mar 30, 2007 #1
    In the function
    what determines the period and phase shift?
    I know that 4=Amplitude
    The answer in the back of the text book says
    Phase Shift=-pie/12
  2. jcsd
  3. Mar 30, 2007 #2


    User Avatar
    Homework Helper

    standard form:
    [tex]A\sin (kx+\phi)[/tex]
    period is given by [tex]2\pi/k[/tex]
  4. Mar 30, 2007 #3
    Yeah but i think it is better to do it this way, because not always you can immediately determine the period of a function based on that standard form. I think it is better to first know how to come up to that standard form.

    so how do we know whether a function is periodic or not?

    f(x+T)=f(x), where T is the period.
    so after you substitute these values you will be able to find the period of that function, which is the same as ry122 said on his op.
  5. Mar 30, 2007 #4
    dessert =/= a mathematical constant, Ry
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook