Difference between revisions of "Tschirnhausen Cubic Catacaustic"

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Line 12: Line 12:
  
 
var cubic = brd.create('curve',
 
var cubic = brd.create('curve',
             [function(t){ return 3*a.Value()*(3-3*t*t);},
+
             [function(t){ return a.Value()*3*(t*t-1);},
               function(t){ return a.Value()*t*(3-t*t);},
+
               function(t){ return a.Value()*t*(t*t-3);},
 
               -2, 2
 
               -2, 2
 
             ],
 
             ],

Revision as of 10:57, 13 January 2011

A semicubical parabola is a curve defined parametrically as

[math] x = t^2 [/math]
[math] y = at^3 [/math]

References

The underlying JavaScript code