M MAHAH8 New member Joined Apr 19, 2020 Messages 1 Apr 19, 2020 #1 Could you please explain to me how to find absolute extrema in this problem: F(x,y)=x^2+xy+y^2 on the sequare -2<=x, y=<2 Thanks in advance.
Could you please explain to me how to find absolute extrema in this problem: F(x,y)=x^2+xy+y^2 on the sequare -2<=x, y=<2 Thanks in advance.
tkhunny Moderator Staff member Joined Apr 12, 2005 Messages 11,325 Apr 19, 2020 #2 1) Have you considered the partial derivatives? 2) Derivatives don't know about edges where derivatives don't exist.
1) Have you considered the partial derivatives? 2) Derivatives don't know about edges where derivatives don't exist.
