models/Primer/conlyapa.lua

   1 --%  ft| TRAJECTORY_T0_V0_A1_O1 sn| Slow~convergence~to~a~fixed~point n| #0 d| 0.1 n| #1 d| 0.2 n| #2 d| 20 n| #3 d| 0.05 n| #4 d| 0 n| #5 d| 50000 n| #6 d| 50000 n| #7 d| x n| #8 d| y
   2 --@@
   3 name = "Conlyapa"
   4 description = "See Model refs in user's guide"
   5 type = "C"
   6 parameters = {"k"}
   7 variables = {"x", "y"}
   8
   9 function f (k, x, y)
  10
  11         x1 =  - x - y^2
  12         y1 = k * x * y
  13
  14         return x1, y1
  15
  16 end
  17
  18 function Jf(k, x, y)
  19
  20         return
  21
  22         -1,              - 2 * y,
  23         k * y,   k * x
  24
  25 end