: Wavelength of wave is a distance between two successive position of particle which are differing in phase by (a) (b) 2n/3 (c) (d) T/3

Are these acceptable wavefunctions in the range x = -infinity to infinity? If so, please explain. cos kx x-1/4

16. Consider the wave function Mx) = (alT)" exp(-ax12) Calculate (x) for n = 1, 2. Can you quickly write down the result for (")?

3- if you know that the wavefunction for a particle is given by Y = Aei(kxx-wt) Prove that the uncertainty in the particle position is an infinity oo