Implicit functions like $(x^{2}+y^{2}-1)^{3}=x^{2}y^{3}$

[assawalhy]

I think we can remove the explicit functions like $y = \sin x$ and just add the implicit functions with is more general and can draw all the functions. Also, inequalities like $y \ge \sin x$ should be easier to draw than equations.

[assawalhy]

The equation in the title: $(x^{2}+y^{2}-1)^{3}=x^{2}y^{3}$.