A hyperbola whose asymptotes are perpendicular. With the origin at the centre and the coordinate x-axis along the transverse axis, it has equation x2 − y2 = a2. Instead, the coordinate axes can be taken along the asymptotes in such a way that the two branches of the hyperbola are in the first and third quadrants. The rectangular hyperbola then has equation of the form xy = c2. For example, y=1/x is a rectangular hyperbola. For xy = c2, it is customary to take c>0 and to use, as parametric equations, x = ct, y = c/t (t ≠ 0).
A rectangular hyperbola
- density current
- density-dependent factor
- density dependent factors
- density determination
- density estimation
- density function
- density functional theory
- density-functional theory
- density gradient
- density-independent factor
- density log
- density of states
- density parameter
- density wave
- density–depth profile
- dental caries
- dental formula
- dentary
- denticle
- dentine
- dentition
- denudation
- denudation chronology
- denumerable
- denumerable/non-denumerable