If you're using the alternate form "x^2 + (y- x^(2/3))^2 = 1" then you are limiting x and y to positive values which explains why you only get part of it. Reply

I think you get a better shape if you use the fifth root rather than the cube root: http://www.wolframalpha.com/input/?i=plot+x%5E2%2… And it's also good as an inequality as < 1 http://www.wolframalpha.com/input/?i=plot+x%5E2%2… Reply

tried this in wolfram alpha and it only shows half the heart :/

If you're using the alternate form "x^2 + (y- x^(2/3))^2 = 1" then you are limiting x and y to positive values which explains why you only get part of it.

I think you get a better shape if you use the fifth root rather than the cube root: http://www.wolframalpha.com/input/?i=plot+x%5E2%2…

And it's also good as an inequality as < 1 http://www.wolframalpha.com/input/?i=plot+x%5E2%2…

i like it