14 The displacement of a wave on a string which is fixed at both ends is given by y x t A cos wt kx RA cos wt kx where R is the

Question

14 The displacement of a wave on a string which is fixed at both ends is given by y x t A cos wt kx RA cos wt kx where R is the reflectivity Show that this may be expressed as the superposition of two standing waves of amplitudes A 1 R and A 1 R

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