The Utility Function $U = f ( x , y )$

question 78

Multiple Choice

The utility function $U = f ( x , y )$ is a measure of utility (or satisfaction) derived by a person from the consumption of two products x and y. Suppose the utility function is $U = - 7 x ^ { 2 } + 5 x y - 2 y ^ { 2 }$ . Determine the marginal utility of product x.

• A) \(5 x - 4 y\)
• B) \(- 14 x + 5 y\)
• C) \(- 14 x + 5 y - 2 y ^ { 2 }\)
• D) \(- 7 x ^ { 2 } + 5 x - 4 y\)
• E) \(- 14 x + 5 - 4 y\)

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