mathematica 求心形封闭图形的体积心形封闭图形的函数是：(x^2 + (9 y^2)/4 + z^2 - 1)^3 - x^2 z^3 - (9 y^2 z^3)/80 == 0RegionPlot3D[(x^2 + (9 y^2)/4 + z^2 - 1)^3 - x^2 z^3 - (9 y^2 z^3)/80 == 0,{x,-1.5,1.5},{y,-1.5,1.5},{z,-1.5,1.5},

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$mathematica 求心形封闭图形的体积心形封闭图形的函数是：(x^2 + (9 y^2)/4 + z^2 - 1)^3 - x^2 z^3 - (9 y^2 z^3)/80 == 0RegionPlot3D[(x^2 + (9 y^2)/4 + z^2 - 1)^3 - x^2 z^3 - (9 y^2 z^3)/80 == 0,{x,-1.5,1.5},{y,-1.5,1.5},{z,-1.5,1.5},$

mathematica 求心形封闭图形的体积心形封闭图形的函数是：(x^2 + (9 y^2)/4 + z^2 - 1)^3 - x^2 z^3 - (9 y^2 z^3)/80 == 0RegionPlot3D[(x^2 + (9 y^2)/4 + z^2 - 1)^3 - x^2 z^3 - (9 y^2 z^3)/80 == 0,{x,-1.5,1.5},{y,-1.5,1.5},{z,-1.5,1.5},
mathematica 求心形封闭图形的体积
心形封闭图形的函数是：(x^2 + (9 y^2)/4 + z^2 - 1)^3 - x^2 z^3 - (9 y^2 z^3)/
80 == 0
RegionPlot3D[(x^2 + (9 y^2)/4 + z^2 - 1)^3 - x^2 z^3 - (9 y^2 z^3)/
80 == 0,{x,-1.5,1.5},{y,-1.5,1.5},{z,-1.5,1.5},
PlotPoints -> 30,Axes -> False,Lighting -> False,
ContourStyle -> {RGBColor[1,0.0,0.0]}]

求该封闭图形的体积,尝试了好久.
求大神指点
只有20的财富值.全给了

mathematica 求心形封闭图形的体积心形封闭图形的函数是：(x^2 + (9 y^2)/4 + z^2 - 1)^3 - x^2 z^3 - (9 y^2 z^3)/80 == 0RegionPlot3D[(x^2 + (9 y^2)/4 + z^2 - 1)^3 - x^2 z^3 - (9 y^2 z^3)/80 == 0,{x,-1.5,1.5},{y,-1.5,1.5},{z,-1.5,1.5},
好像只能求出数值积分,精确解求不出来

NIntegrate[
Boole[(x^2 + (9*y^2)/4 + z^2 - 1)^3 - x^2*z^3 - (9*y^2*z^3)/80 <=
0], {x, -1.3, 1.3}, {y, -1.5, 1.5}, {z, -1.5, 1.5}]
结果 3.3451

求出封闭图形的面积 mathematica各种标准二次曲面的图形 mathematica 求心形封闭图形的体积心形封闭图形的函数是：(x^2 + (9 y^2)/4 + z^2 - 1)^3 - x^2 z^3 - (9 y^2 z^3)/80 == 0RegionPlot3D[(x^2 + (9 y^2)/4 + z^2 - 1)^3 - x^2 z^3 - (9 y^2 z^3)/80 == 0,{x,-1.5,1.5},{y,-1.5,1.5},{z,-1.5,1.5}, 内部有空的封闭图形的周长如图,求封闭图形的面积. 如图所示,求封闭图形的面积. 根据图形,求封闭区域的面积不封闭的图形有面积吗? 不封闭的图形有面积吗? 该怎样求这个封闭图形的面积封闭图形一周的长度就是这个图形的什么封闭图形一周的长度就是图形的（如何用mathematica作出三维的x=2图形 mathematica中如何在定义的函数中输出图形 mathematica 显示不出图形怎样理解封闭图形? 哪些是封闭图形这个封闭图形是( ).