>>ezplot('x^2+y^2-3*x*y^2','a^3-a^2-b^2+b')
??? Error using ==> ezplot>ezparam
Cannot plot parametrized surfaces. Try ezsurf.

Error in ==> ezplot at 166
[hp,cax] = ezparam(cax,f{1},f{2},vars,labels,args{2:end});
我想找出x^2+y^2-3*x*y^2'和a^3-a^2-b^2+b这两个函数的交点,用ezplot来画,却出错,为什么啊??应该怎么做啊??