# Need a little intuition on equation of travelling wave .

1. Sep 24, 2012

### nishantve1

So heres the equation
y(x,t) = A cos (kx - wt)
where A is the amplitude of vibration and k = 2pi/lambda
i have already dealt with SHM or SHO and i completely understand the equations like
x = Acos(wt + phi)
but i didnt really dealt with waves and the equation of travelling wave is kinda difficult to understand so if someone could I dont know prove or explain how the equation works i would be really happy