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Text File  |  1993-10-11  |  240b  |  23 lines
  1. ;Iterate! formula file
  2. ;by Brent Hugh
  3.  
  4. ;paramater defaults
  5. a=1.5
  6. b=1.5
  7. c=0
  8. d=0
  9. mu=0
  10.  
  11. ;window defaults
  12. xmin=-20
  13. xmax=20
  14. ymin=-20
  15. ymax=20
  16.  
  17. ;the function itself
  18. x= a * (x - y) / (x + y)
  19. y= y + b * (y + x) / (y - x)
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