A thin taut string is fixed at both ends and stretched along the horizontal x-axis with its left end at x = 0. It is vib

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A thin taut string is fixed at both ends and stretched along thehorizontal x-axis with its left end at x = 0. It is vibrating inits third overtone, and the equation for the vertical displacementof any point on the string is y(x,t) = (1.45 cm) sin[(16.1 m^-1) x]cos[(115 rad/s) t]. What is the fundamental frequency of thestring?