∫∫ (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
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