Tschirnhausen Cubic Catacaustic: Difference between revisions

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             ],
             ],
             {strokeWidth:1, strokeColor:'black'});
             {strokeWidth:1, strokeColor:'black'});
var cataustic = brd.create('curve',
                [function(t){ return a.Value()*6*(t*t-1);},
                  function(t){ return a.Value()*4*t*t*t;},
                -2, 2
                ],
                {strokeWidth:1, strokeColor:'red'});
brd.unsuspendUpdate();
brd.unsuspendUpdate();
})();
})();

Revision as of 09:52, 13 January 2011

A semicubical parabola is a curve defined parametrically as

[math]\displaystyle{ x = t^2 }[/math]
[math]\displaystyle{ y = at^3 }[/math]

References

The underlying JavaScript code