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Text File  |  1999-04-03  |  181b  |  6 lines
  1. Sadle=sqr(x)|sqr(y)
  2. Sheet=10*cos(x)+50|10*sin(x)+50
  3. Sheet Folded=20*cos(3*x)+50|10*sin(y)+50
  4. Sheet Double Folded=20*cos(3*x)+50|10*sin(5*y)+50
  5. Enclosing=x^2-2*x+1.27|y^2-3*y+3
  6.