14 febrero 2009

Corazón

$latex \left({X^2+\displaystyle\frac{9}{4}Y^2+Z^2-1}\right)^3-X^2Z^3-\displaystyle\frac{9}{80}Y^2Z^3=0 $

$latex -3\leq{X,Y,Z}\leq3 $

corazon