1. Limited time only! Sign up for a free 30min personal 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!

Homework Help: Finding the exact value for period in radians

  1. Mar 17, 2010 #1
    1. The problem statement, all variables and given/known data
    What is the exact period of the function f(x)= 6 sin (4x+pi)
    = a sin (b)

    2. Relevant equations
    Period= 2pi/(abs b)

    3. The attempt at a solution
    I found the period as 2pi/(4+pi), this is said to be no the correct answer, how do you simplify this down so it is the exact value???
  2. jcsd
  3. Mar 18, 2010 #2


    Staff: Mentor

    6 sin(4x + pi) = 6 sin(4 (x +pi/4))

    What's the period of y = 6 sin(4x)? It's the same as your function. The difference between this function and yours is that one is a horizontal translation of the other.
  4. Mar 18, 2010 #3
    Thank you
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook