Heart Curve/Formulation 4

Theorem

 * $\left({y - \dfrac {2 \left({\left\lvert{x}\right\rvert + x^2 - 6}\right)} {3 \left({\left\lvert{x}\right\rvert + x^2 + 2}\right)} }\right)^2 + x^2 = 36$


 * HeartCurve4.png