Difference between revisions of "Tschirnhausen Cubic Catacaustic"
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Line 17: | Line 17: | ||
], | ], | ||
{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 11:52, 13 January 2011
A semicubical parabola is a curve defined parametrically as
- [math] x = t^2 [/math]
- [math] y = at^3 [/math]