I see quadric surfaces.. (I had the name slightly wrong, too).
If you skewer them with any vector, the vector passes through the surface a maximum of two times...
We had to learn about them in Linear Algebra - sort of the 3D equivalent of conic sections in the HSC, except done from a linear algebra point of view, rather than using calculus. I don't know what use they would be for an engineer, though. (I suppose that's why they chopped them out of the course.)
If you skewer them with any vector, the vector passes through the surface a maximum of two times...
We had to learn about them in Linear Algebra - sort of the 3D equivalent of conic sections in the HSC, except done from a linear algebra point of view, rather than using calculus. I don't know what use they would be for an engineer, though. (I suppose that's why they chopped them out of the course.)