(In general \(y\) is any general physical quantity which is made to oscillate at one place and these oscillations are propagated to other places also).
$ {y_1} = {10^{ - 6}}\sin [100\,t + (x/50) + 0.5]\;m $
$ {y_2} = {10^{ - 6}}\cos \,[100\,t + (x/50)]\;m $
જ્યાં $x$ મીટરમાં હોય અને $t$ સેકન્ડમાં છે