Let,

(5.43)

where ω is the angular velocity and v is the frequency.

(5.44)

αvp = ω = 2π

(5.45)

(5.46)

Again from Eq. (5.37) ⇒

	(5.47)
	(5.48)

or,

(5.49)

The function of represents the amplitude of the standing wave at any position x for a vibration of associated wavelength.