# Equation of axis of a periodic function!

• Nov 28th 2012, 02:42 PM
sakonpure6
Equation of axis of a periodic function!
I am confused on how to find it. Is it the amplitude of the periodic function or what?

For instance i have a periodic function that is 6m between two points so amplitude = 3 and does that mean the equation of axis is y=3 ?

any help is appreciated! and thanks in advance!
• Nov 28th 2012, 02:47 PM
skeeter
Re: Equation of axis of a periodic function!
what is the function, specifically?
• Nov 28th 2012, 02:47 PM
sakonpure6
Re: Equation of axis of a periodic function!
sin function for instance
• Nov 28th 2012, 02:48 PM
skeeter
Re: Equation of axis of a periodic function!
depends on the vertical shift
• Nov 28th 2012, 02:50 PM
sakonpure6
Re: Equation of axis of a periodic function!
Quote:

Originally Posted by skeeter
depends on the vertical shift

the function starts at 1 goes up to 7 and back down to 1 in 8 seconds
• Nov 28th 2012, 02:52 PM
skeeter
Re: Equation of axis of a periodic function!
I would imagine the axis of a periodic function (never heard it called this before) is the same as the midline ... y = 4 in the case you provided.
• Nov 28th 2012, 02:54 PM
sakonpure6
Re: Equation of axis of a periodic function!
how did u calculate y=4, because i got y=3 ( same as the amplitude? )
• Nov 28th 2012, 02:55 PM
skeeter
Re: Equation of axis of a periodic function!
what value is halfway between y = 7 (max) and y = 1 (min) ?
• Nov 28th 2012, 02:56 PM
sakonpure6
Re: Equation of axis of a periodic function!
3
• Nov 28th 2012, 03:01 PM
skeeter
Re: Equation of axis of a periodic function!
how far is 3 from 7?

how far is 3 from 1?

are they equal?
• Nov 28th 2012, 03:02 PM
sakonpure6
Re: Equation of axis of a periodic function!
oh okay :) thank you!