Changes

== Mathematical definition ==

== Mathematical definition ==

A hyperbola may be more formally defined as the locus of all points  the difference of whose distances from two fixed points (the foci) is constant.  The [[Cartesian]] equation for a hyperbola with a semimajor axis about the x-axis is

A hyperbola may be more formally defined as the locus of all points  the difference of whose distances from two fixed points (the foci) is constant.  The [[Cartesian]] equation for a hyperbola with a semimajor axis about the x-axis is

:<math>x^2/a^2 - y^2/b^2 = 1 </math>

:<math>\frac{x^2}{a^2} - \frac{y^2}{b^2} = 1 </math>

 

== Applications ==

== Applications ==

[[Nuclear reactor]] cooling towers are an example of a hyperbolic-shaped structure.  This form allows for maximum structural strength with minimum use of building materials.

[[Nuclear reactor]] cooling towers are an example of a hyperbolic-shaped structure.  This form allows for maximum structural strength with minimum use of building materials.