我用Mathematica画的,你看行不行……DT的图像.
RegionPlot3D[-2 Sqrt[2] < x + y + z < 0 -2 Sqrt[2] < x - y + z <
0 80 x + 15 Sqrt[2] [Pi] y + 64 z > 0
80 x - 15 Sqrt[2] [Pi] y + 64 z > 0, {x, 0, 15}, {y, -5,
5}, {z, -15, 0}]
我用Mathematica画的,你看行不行……DT的图像.
RegionPlot3D[-2 Sqrt[2] < x + y + z < 0 -2 Sqrt[2] < x - y + z <
0 80 x + 15 Sqrt[2] [Pi] y + 64 z > 0
80 x - 15 Sqrt[2] [Pi] y + 64 z > 0, {x, 0, 15}, {y, -5,
5}, {z, -15, 0}]