# What is the equation of Directrix of hyperbola?

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## What is the equation of Directrix of hyperbola?

has foci at (±ae,0) and directrices x=±a/e, where its eccentricity e is given by b2=a2(e2−1).

## What is the condition for rectangular hyperbola?

A hyperbola is said to be rectangular if its transverse and conjugate axis are equal, i.e. if. 2a=2b⇒a=b. Thus, the equation of a rectangular hyperbola is of the form. x2−y2=a2.

## Is there a Directrix in hyperbola?

directrix: A line used to construct and define a conic section; a parabola has one directrix; ellipses and hyperbolas have two (plural: directrices).

## Is xy a hyperbola?

Rectangular Hyperbolas (or Equilateral Hyperbolas) are hyperbolas in the form of: xy = k, where k � 0. 3) The asymptotes are the x- axis and the y-axis. 7) The vertices are located where the transverse axis intersects the graph of the hyperbola.

## What is the equation of directrix?

Equation of directrix is y = -a. i.e. y = -½ is the equation of directrix. Vertex of the parabola is (0,0).

## What are Directrices of hyperbola?

The directrices are between the two parts of a hyperbola and can be used to define it as follows: A hyperbola is the locus of points such that the ratio of the distance to the nearer focus to the distance to the nearer directrix equals a constant that is greater than one. This constant is the eccentricity.

## What is the difference between hyperbola and rectangular hyperbola?

What is the difference between? Rectangular hyperbola is a special type of hyperbola in which it’s asymptotes are perpendicular to each other. (x2/a2) – (y2/b2) = 1 is the general form of hyperbolas, while a=b for rectangular hyperbolas, i.e: x2 – y2 = a2.

## Why is it called a rectangular hyperbola?

A rectangular hyperbola has its asymptotes or the axes perpendicular to each other, therefore it is called rectangular.

## Is a hyperbola a polynomial?

The parabola is given by the equation Y2=X; we can parametrize it by X = t 2andY = t. Thus the parabola is a polynomial curve in the sense that we can parametrize it by polynomial functions of the parameter t. Thus the hyperbola is not a polyno- mial curve, but it is a rational curve.

## What is P parabola?

p is the distance from the vertex to the focus. You remember the vertex form of a parabola as being y = a(x – h)2 + k where (h, k) is the vertex of the parabola.

## What is meant by the eccentricity of a hyperbola?

Eccentricity. Any branch of a hyperbola can also be defined as a curve where the distances of any point from: a fixed point (the focus), and; a fixed straight line (the directrix) are always in the same ratio. This ratio is called the eccentricity, and for a hyperbola it is always greater than 1.

## What is the focus of a hyperbola?

focus of hyperbola : the two points on the transverse axis. These points are what controls the entire shape of the hyperbola since the hyperbola’s graph is made up of all points, P, such that the distance between P and the two foci are equal.

## How many foci’s does the graph of a hyperbola have?

Each hyperbola has two important points called foci. Actually, the curve of a hyperbola is defined as being the set of all the points that have the same difference between the distance to each focus. We need to use the formula c 2 = a 2 + b 2 to find c.

## What is the equation of a hyperbola with?

A hyperbola with a horizontal transverse axis and center at (h, k) has one asymptote with equation y = k + (x – h) and the other with equation y = k – (x – h). A hyperbola with a vertical transverse axis and center at (h, k) has one asymptote with equation y = k + (x – h) and the other with equation y = k – (x – h) .