A very long string with linear density 3.0g/m is stretched along the x-axis with a tension of 6.1N. At x=0m it is tied to a 126.1Hz simple harmonic oscillator that vibrates perpendicular to the string with amplitude 4.1mm. The oscillator is set to a maximum positive displacement at time t=0s. First write the displacement equation for the travelling wave on the string, you will need to calculate the parameters describing this wave from the data given. At t=4.4ms, what is the string's displacement (mm) at point 8.1m from the oscillator