Question: Let y1(x, t) = Acos (k1x w1t) and Y2(x,t) =Acos(k, x - w2t) be two solutions to the wave equation, Eq. (I5.12), for the

Let y1(x, t) = Acos (k1x – w1t) and Y2(x,t) =Acos(k, x - w2t) be two solutions to the wave equation, Eq. (I5.12), for the same u. Show that y(x, t) =y,(x, t) + Y2(x, t) is also a solution to the wave equation.

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