Axes Command

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Axes[ <Conic> ]
Returns the equations of the major and minor axes of a conic section.
Note: See also MajorAxis and MinorAxis commands.
Axes[ <Quadric> ]
Creates the 3 axes of the given quadric.
Example:
Axes[x^2 + y^2 + z^2= 3] returns the three lines
a: X = (0, 0, 0) + λ (1, 0, 0), b: X = (0, 0, 0) + λ (0, 1, 0) and c: X = (0, 0, 0) + λ (0, 0, 1)
Notes: Specifically:
  • if the given quadric is a cylinder, the command yields the two axes of the bottom circle and the rotation axis.
  • if the given quadric is a sphere, the command yields the three axes parallel to the coordinate system axes.
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