13. Suppose that the mass in a mass-spring-dashpot system with m = 10, c = 9, and k = 2 is set in motion with x (0) = 0 and x'(0) = 5. (a) Find the position func- tion x(t) and show that its graph looks as indicated in Fig. 5.4.14. (b) Find how far the mass moves to the right before starting back toward the origin. %3D

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