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∫∫ (x^2 + y^2) dxdy , D = {(x,y)屬於R^2,(x-3)^2 + y^2 = 3^2 } D -(x^2 + 4y^2) ∫∫ e dxdy , D = {(x,y)屬於R^2, x^2 + 4y^2≦1 } D Evaluate the area enclosed by 2 2 2 2 x y x y --- + ---- = 1 and ---- + --- = 1 9 16 16 9 多謝了 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 218.167.191.75