[Solution] The equation x ’’ + 16 x = 28cos 3 t ; x (0) = x ’(0) = 0, describes forced undamped motion of a mass on a spring. Express the position function
Question: The equation x ’’ + 16 x = 28cos 3 t ; x (0) = x ’(0) = 0, describes forced undamped motion of a mass on a spring. Express the position function x ( t ) as the sum of two oscillations.
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