# Question: the function f is given for x y andsup1 0by...

###### Question details

The function f is given, for x, y ¹ 0

by f (x, y) = x + 4/y - 2y/x .

Show that f has one critical (or stationary) point and determine what type of critical point this is.

The function f is given, for x, y ¹ 0

by f (x, y) = x + 4/y - 2y/x .

Show that f has one critical (or stationary) point and determine what type of critical point this is.