3. Six second-order equations and four y(t)-graphs are given below, respectively. The equations are all of the form d²y dy + p + qy = cos(wt) dt2 dt for various values of the parameters p, q, and w. For each y(t)-graph, determine the second-order equation for which y(t) is a solution, and state briefly how you know your choice is correct. You should do this exercise WITHOUT using technology. (i) p = 5, q= 3, w = 1 (ii) p = 1, q= 3, w = 1 (v) p = 5, q=1, w = 3 (iii) p = 5, q=2, w = 2 (vi) p = 1, q= 1, w = 3 (iv) p = 1, q= 3, w = 2 (a) (b) y y MAXAI 87 бл (c) Annos 1 677 (d) t विनिनिधि Forgomane 47 67 y(t)-graphs for Exercise 3. NAI 87

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