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Linear Algebra with SageMath Learn math with open-source software

Section 3.3 Graphing of Systems

Since each equation implicitly defines a function, we can use implicit_plot to graph each equation in 2D-space.
We can also plot a point whose coordinates are the ones given in the solution.
Now, the full plot with the equations, the solution, and a legend.
We can plot equations in 3D-space using implicit_plot3d. Here is an example with \(\textbf{Case I}\text{:}\)
Here is the same method with \(\textbf{Case II}\text{:}\)
By rotating the graph, we can visualize the infinitely many solutions of this system, represented by the line where the three planes intersect.
Here is another example with \(\textbf{Case III}\text{:}\)
In this last case, we can observe that two of the planes are parallel, so there is no intersection among the three planes.