Tschirnhausen Cubic Catacaustic: Difference between revisions

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

Revision as of 09:58, 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