Find the Local Maximum, and Minimum Value and Saddle Points $$f ( x , y ) = x ^ { 2 } - x y + y ^ { 2 } - 9 x + 6 y + 9$$

question 34

Short Answer

Find the local maximum, and minimum value and saddle points of the function. $$f ( x , y ) = x ^ { 2 } - x y + y ^ { 2 } - 9 x + 6 y + 9$$

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Definitions:

Alcoholics Anonymous

A fellowship of individuals who share their experience, strength, and hope with each other to solve their common problem and help others to recover from alcoholism.

Disease Model

A model that views psychiatric disorders as similar to physical diseases, usually with an identifiable cause, predictable progression, and potential for treatment or prevention.

Abstinence

The act of refraining from indulging in an activity or consuming a substance, especially alcohol or other drugs.

Somatic

Pertaining to or affecting the body, particularly as distinct from the mind or the environment.