The quartic curve given by the implicit equation
 |
(1)
|
so-named because of its resemblance to a tooth.
The bicuspid curve has cusps at 
and 
.
The horizontal tangents are located at 
, and the vertical tangents at 
, 
, and 
, where 
is a polynomial root.
The bicuspid with 
has approximate area
 |
(2)
|
and approximate perimeter
 |
(3)
|
SEE ALSO:Bean Curve, Stirrup Curve, Tooth Surface
REFERENCES:
Cundy, H. and Rollett, A. Mathematical Models, 3rd ed. Stradbroke, England: Tarquin Pub., p. 73, 1989.
