- #1

- 382

- 0

Thanks!

Please note, A and a are constants.

You are using an out of date browser. It may not display this or other websites correctly.

You should upgrade or use an alternative browser.

You should upgrade or use an alternative browser.

- Thread starter M. next
- Start date

- #1

- 382

- 0

Thanks!

Please note, A and a are constants.

- #2

Mark44

Mentor

- 34,944

- 6,705

This should be f(x) = A sin(##\frac{xa}{2}##). The only variable here is x. k doesn't appear at all in the formula for this function.If we have f(k)=Asin([itex]\frac{xa}{2}[/itex]).

This is wrong, and I have no idea where you got this.Then it was mentioned that f(x) is a periodic function with period [itex]\frac{Δx.a}{2}[/itex]=π. How come?

The sine and cosine functions are periodic. The period of both sin(x) and cos(x) is 2##\pi##. The period of sin(Kx) and cos(Kx) is ##\frac{2 \pi}{K}##.

What then would be the period of sin((a/2)x)?

Thanks!

Please note, A and a are constants.

- #3

- 382

- 0

Thanks

- #4

Mark44

Mentor

- 34,944

- 6,705

If the period of sin(Kx) is ##2\pi/K##, what is the period of sin((a/2)x)?

Thanks

- #5

- 382

- 0

I answered you previously, it would be 4π/a

- #6

Mark44

Mentor

- 34,944

- 6,705

You asked about the formula in your first post (and that I quoted). I have no idea what they mean by that formula, especially the part with Δx.

- #7

- 382

- 0

Yes. Neither do I. Thank you anyway!

Share: