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Chapter 6 Quadric Surfaces

Much like the conic sections, quadric surfaces are defined by second-degree equations in three variables. The general form of a quadric surface is given by the equation:
\begin{equation*} Ax^2 + By^2 + Cz^2 + Dxy + Exz + Fyz + Gx + Hy + Iz + J = 0 \end{equation*}
where \(A, B, C, D, E, F, G, H, I,\) and \(J\) are constants. For our purposes, we will focus on the simpler forms of quadric surfaces that can be obtained by setting some of the coefficients to zero. For our examples, we will consider the following simplified forms of quadric surfaces:
\begin{equation} Ax^2 + By^2 + Cz^2 + Dz = E\tag{6.1} \end{equation}