models/Primer/disa.lua

   1 --%  ft| TRAJECTORY_T0_V0_A1_O0 sn| Convergence~to~a~fixed~point n| #0 d| 0.1 n| #1 d| 0.45 n| #2 d| 1 n| #3 d| -0.1 n| #4 d| 0 n| #5 d| 1000 n| #6 d| 1000 n| #7 d| x n| #8 d| y
   2 --@@
   3 name = "Conc"
   4 description = "See Model refs in user's guide."
   5 type = "D"
   6 parameters = {"a", "b"}
   7 variables = {"x", "y"}
   8
   9 function f(a, b, x, y)
  10
  11         x1= 2 * b * x + 10
  12         y1= 2 * a * y^2
  13
  14         return x1, y1
  15
  16 end
  17
  18
  19 function Jf(a, b, x, y)
  20
  21 return
  22
  23 2 * b,  0,
  24 0,      4 * a * y
  25
  26 end