Homework Statement
f(x,y)=2x^3+xy^2+5x^2+y^2
Homework EquationsThe Attempt at a Solution
fx(x,y)=6x^2+y^2+25x
fy(x,y)=2xy+2y
fxx(x,y)=12x+25
fyy(x,y)=2y+2
fxy(x,y)=2y
I found the partial derivatives from the equation. I am stuck at finding the critical points from the first two fx(x,y) and...