# Thread: Equation of axis of a periodic function!

1. ## 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!

2. ## Re: Equation of axis of a periodic function!

what is the function, specifically?

3. ## Re: Equation of axis of a periodic function!

sin function for instance

4. ## Re: Equation of axis of a periodic function!

depends on the vertical shift

5. ## Re: Equation of axis of a periodic function!

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

6. ## 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.

7. ## Re: Equation of axis of a periodic function!

how did u calculate y=4, because i got y=3 ( same as the amplitude? )

8. ## Re: Equation of axis of a periodic function!

what value is halfway between y = 7 (max) and y = 1 (min) ?

3

10. ## Re: Equation of axis of a periodic function!

how far is 3 from 7?

how far is 3 from 1?

are they equal?

11. ## Re: Equation of axis of a periodic function!

oh okay thank you!