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 Author Comment/Response Peter Pein 11/11/12 10:10am Hi, the infix operator for the logical and is "&&" [1]: u[x_, t_] = Piecewise[{ {t, -1 < x - t < 1 && -1 < x + t < 1}, {1/2 (1 - x + t), -1 < x - t < 1 && x + t > 1}, {1/2 (x + t + 1), x - t < -1 && -1 < x + t < 1}, {1, x - t < -1 && x + t > 1} (*, * default value is 0 * {0, x + t < -1}, * {0, x - t > 1} *) }]; Manipulate[ Plot[u[x, t], {x, -10, 10}, PlotRange -> {0, 1.05 t}(*looks better IMHO*)], {t, 0, 1, .01} ] Peter [1]: http://reference.wolfram.com/mathematica/ref/And.html URL: ,

 Subject (listing for 'plotting a wave equation') Author Date Posted plotting a wave equation dustin 11/10/12 12:27pm Re: plotting a wave equation yehuda 11/11/12 02:31am Re: plotting a wave equation Peter Pein 11/11/12 10:10am
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