Determine the critical points of f(x,y)=
+ 2xy + 2
- 4y and also determine by the second-derivative test whether each point corresponds to a relative maximum,to a relative minimum,to neither,or whether the test gives no information.

Question

Determine the critical points of f(x,y)=  
+ 2xy + 2  
- 4y and also determine by the second-derivative test whether each point corresponds to a relative maximum,to a relative minimum,to neither,or whether the test gives no information.

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The Answer of Determine the critical points of f(x,y)=  
+ 2xy + 2  
- 4y and also determine by the second-derivative test whether each point corresponds to a relative maximum,to a relative minimum,to neither,or whether the test gives no information.

Determine the Critical Points of F(x,y)=