Hello

I have a problem with finding the function that gives the boundary curve in RegionPlot command. I use the following code to make the regions

RegionPlot[{{x^3 - y^2 > 2 y && x^2 + y^3 > 2 x }, {x^3 - y^2 < 2 y && x^2 + y^3 > 2 x }}, {x, -1, 1}, {y, -1, .1}, PlotStyle -> {Green, Yellow}, BoundaryStyle -> {Black, Thick}]

Here we see a black thick curve between the green and yellow regions, I mean the boundary that separates the black and green regions (I showed it with a red arrow).

Now, how can I find its equation or at least the list of points living on this curve?

Best Hadi

Attachments: