Waves

Equation of two simple harmonic waves are given by \({Y_1} = 2\sin 8\pi \left( {{t \over {0.2}} - {x \over 2}} \right)m\) and \({Y_2} = 4\sin 8\pi \left( {{t \over {0.16}} - {x \over {1.6}}} \right)m\) then both waves have