12. Suppose that a spring-mass system is given by a model u" + 9 = 0 (0) = -1,4 (0) = 3V3 Find the displacement u at any
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12. Suppose that a spring-mass system is given by a model u" + 9 = 0 (0) = -1,4 (0) = 3V3 Find the displacement u at any
12. Suppose that a spring-mass system is given by a model u" + 9 = 0 (0) = -1,4 (0) = 3V3 Find the displacement u at any time t in the form Rcos(a - 5). Find the amplitude, the period, the frequency and the phase of the motion. 13. Find the inverse Laplace transform of 2 8² +38 – 4 14. Find the inverse Laplace transform of 2s + 2 s2 + 25 + 5 2e-2 15. Find the inverse Laplace transform of s2 - 4
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