In mathematics, a quadric, or quadric surface (quadric hypersurface if D > 2), is any D-dimensional hypersurface in (D + 1)-dimensional space defined as the locus of zeros of a quadratic polynomial. In coordinates x1, x2, ..., xD+1, the general quadric is defined by the algebraic equation
近义、反义、联想词
近义词
n.
curve, curved shape
英英词典
quadric surface n.
a curve or surface whose equation (in Cartesian coordinates) is of the second degree