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Find the center of mass of the solid bounded by z = 4 - x^2 - y^2 and above the square with vertices (1,1) (1,-1) (-1,-1) and (-1,1) if the density is p = 3 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 122.124.133.39