(3).(12 points) Evaluate the integral dxdy, where D is the trapezoidal region with vertices (1,0), (2,0), (-1,-1) and (-2,-2).
阿摩線上測驗
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阿摩線上測驗
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dxdy, where D is the trapezoidal region with vertices (1,0), (2,0), (-1,-1) and (-2,-2).