9. (10%) Evaluate the double integral
，
where R is the trapezoidal region with vertices (1,0), (2,0), (0,-2) and (0, -1).
Problem
阿摩線上測驗
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阿摩線上測驗
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9. (10%) Evaluate the double integral，
where R is the trapezoidal region with vertices (1,0), (2,0), (0,-2) and (0, -1).
Problem