Differential Eq.

*To*: mathgroup at smc.vnet.net*Subject*: [mg106478] Differential Eq.*From*: Jamil Ariai <j_ariai at hotmail.com>*Date*: Thu, 14 Jan 2010 05:47:10 -0500 (EST)

Hi All, Can anybody kindly tell me how I can solve the following differential equation, with (x[0], x'[0]) = (0, 0): x''[t] -x[t] + g[t] = 0, where g[t] = b*v, for x'[t] > v, g[t] = b*(x'[t]-u), for Abs[x'[t]-u] < v, and g[t] = -b*v. Take b = 5, v = 0.2, and u = 0.1. Draw x[t] vs t, and x'[t] vs x[t]. Thanks. J. Ariai

**Follow-Ups**:**Re: Differential Eq.***From:*Daniel Lichtblau <danl@wolfram.com>