Find the critical points of f(x,y)=?4x^3?y^2+3x^2?10y?6
and determine whether the following points are local maximums, local minimums, saddle points, or none of these.
Input the critical points separated by ; below. For example, input (-1,9) ; (2,3) ; (4,2) if there are three critical points, or (-1,-1) if there is only one critical point.
The critical points f(x,y) are ________________