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** Please see the attachment for the complete problem description **

A retarding force, symbolized by the dashdot in the figure to the right, slows the motion of the weighted spring so that the mass's position at time t is y = 22e^(-t) cos t, t >=0. Find the average value of y over the interval 0 < t < pi

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By integration, this solution explains how to finds the average value of spring displacement.

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