Use the Indicated Change of Variables to Evaluate the Following $$x = \frac { 1 } { 2 } ( u + v ) , y = - \frac { 1 } { 2 } ( u - v )$$

question 75

Multiple Choice

Use the indicated change of variables to evaluate the following double integral. $$x = \frac { 1 } { 2 } ( u + v ) , y = - \frac { 1 } { 2 } ( u - v )$$
$\iint_{R} 60 x y d A$

• A) 128
• B) 120
• C) \(- 120\)
• D) 118
• E) 60

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