DeNiSkA
My question is about equation of a wave which travels on a string.
I have seen that we write wave function as y=f(x-vt) , but why did we select this function, why not any other like y=f(5x-9vt) .
I also have a question why is there a negative sign why not positive sign, (for me positive one makes sense)
Thank you for helping :)
I have seen that we write wave function as y=f(x-vt) , but why did we select this function, why not any other like y=f(5x-9vt) .
I also have a question why is there a negative sign why not positive sign, (for me positive one makes sense)
Thank you for helping :)