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Text File  |  1993-03-07  |  167 b   |  7 lines
  1. function yp = lotka(t,y)
  2. %LOTKA    Lotka-Volterra predator-prey model.
  3.  
  4. %    Copyright (c) 1984-93 by The MathWorks, Inc.
  5.  
  6. yp = diag([1 - .01*y(2), -1 + .02*y(1)])*y;
  7.