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Text File  |  2002-05-15  |  631 b   |  38 lines
  1. "Interesting parametric expressions to plot in a 2D-plot window"
  2.  
  3. "A bow tie:"
  4.  
  5. [t*(t^2-1)/(t^2+1),2*(t^2-1)/(t^2+1)]
  6.  
  7. "A curvilinear diamond:"
  8.  
  9. [2*COS(t)^3,2*SIN(t)^3]
  10.  
  11. "An infinity:"
  12.  
  13. [3*SIN(t),2*SIN(2*t)]
  14.  
  15. "A pretzel:"
  16.  
  17. [t/pi*(12*(t/pi)^2-9),((t/pi)^2-1)*16*(t/pi)^2+2]
  18.  
  19. "A fish (Move the cross to where its eye should be):"
  20.  
  21. [3/2*COS(t)*(COS(t)+1),2*SIN(2*t)]
  22.  
  23. "An embellished valentine:"
  24.  
  25. [SIN(2*t)+SIN(t),-COS(2*t)-COS(t)]
  26.  
  27. "A spiral:"
  28.  
  29. [EXP(t/4)*SIN(2*t),EXP(t/4)*COS(2*t)]
  30.  
  31. "Twin spirals:"
  32.  
  33. [2/3*t*COS(7/2*t),2/3*t*SIN(7/2*t)]
  34.  
  35. "A slinky gone bad:"
  36.  
  37. [t-11/10*SIN(3*t),-22/10*COS(3*t)]
  38.