題組內容
3. Find the definite or indefinite integrals of the following functions.
(5) ∬Rx2e-ydx dy, R = {(x, y) |1 ≤ x ≤ 
, 1 ≤ y ≤ 4} (10 points)
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(5) ∬Rx2e-ydx dy, R = {(x, y) |1 ≤ x ≤ , 1 ≤ y ≤ 4} (10 points)