Is (0, 0)a Critical Point of the Following Function $f ( x , y ) = \cos x \cos y$

question 47

Multiple Choice

Is (0, 0) a critical point of the following function? $f ( x , y ) = \cos x \cos y$

• A)No.
• B)Yes: (global)maximum.
• C)Yes: local minimum.
• D)Yes: (global)minimum.

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Definitions:

Dominion

Supreme authority or control over a domain, or the ownership and absolute right to use, enjoy, and dispose of property.

Real Property

Land and anything permanently attached to it, including buildings and other structures, considered a form of real estate.

Conversion

is a tort that involves the unauthorized taking or use of someone else's personal property, depriving them of its possession or use.

Trespass to Personal Property

A tort involving the intentional interference with the use or possession of personal property belonging to another.