![3 个平面相交的问题](https://linux22.com/image/388140/3%20%E4%B8%AA%E5%B9%B3%E9%9D%A2%E7%9B%B8%E4%BA%A4%E7%9A%84%E9%97%AE%E9%A2%98.png)
我正在尝试制作如下的 3d 图。这是我的 MWE:
\begin{tikzpicture}
\begin{axis}[xlabel=$x$, ylabel=$y$, zlabel={$z$},legend pos=outer north east,z post scale=1.1,grid=both,view={50}{-10}, restrict z to domain={-3:3}]
\addplot3 [surf,
samples=10,
domain=-2:2 ,
opacity=1,
color=gray!20,z buffer=auto] {(x-2*y-4)/-3};
\addplot3 [surf,
samples=10,
domain=-2:2 ,
opacity=1,
color=gray!20,z buffer=auto] {2*x+3*y-1};
\addplot3 [surf,
samples=10,
domain=-2:2 ,
opacity=1,
color=gray!20,z buffer=auto] {(4*x-y-1)/-5};
\end{axis}
\end{tikzpicture}
老实说,它是有效的,但是在向学生展示时我遇到了麻烦:These 3 planes intersect mutually and there is not a single point.
Maple 告诉我,我选择的范围看起来很好,所以我很确定:
您认为我应该考虑某个观点吗?或者您能给我一些提示吗?谢谢