hyperbola
(noun)
The conic section formed by the plane being perpendicular to the base of the cone.
(noun)
One of the conic sections.
Examples of hyperbola in the following topics:
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Hyperbolas as Conic Sections
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Parts of a Hyperbola
- The features of a hyperbola can be determined from its equation.
- A hyperbola is one of the four conic sections.
- All hyperbolas share common features, and it is possible to determine the specifics of any hyperbola from the equation that defines it.
- When drawing the hyperbola, draw the rectangle first.
- The rectangular hyperbola is highly symmetric.
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Standard Equations of Hyperbolas
- A standard equation for a hyperbola can be written as $x^2/a^2 - y^2/b^2 = 1$.
- A hyperbola consists of two disconnected curves called its arms or branches.
- At large distances from the center, the hyperbola approaches two lines, its asymptotes, which intersect at the hyperbola's center.
- A hyperbola aligned in this way is called an "East-West opening hyperbola. " Likewise, a hyperbola with its transverse axis aligned with the y-axis is called a "North-South opening hyperbola" and has equation:
- The asymptotes of the hyperbola (red curves) are shown as blue dashed lines and intersect at the center of the hyperbola, C.
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Introduction to Hyperbolas
- A hyperbola can be defined in a number of ways.
- A hyperbola is:
- The center of this hyperbola is the origin $(0,0)$.
- From the graph, it can be seen that the hyperbola formed by the equation $xy = 1$ is the same shape as the standard form hyperbola, but rotated by $45^\circ$.
- Connect the equation for a hyperbola to the shape of its graph
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Applications of Hyperbolas
- Hyperbolas may be seen in many sundials.
- At most populated latitudes and at most times of the year, this conic section is a hyperbola.
- So if we call this difference in distances $2a$, the hyperbola will have vertices separated by the same distance $2a$, and the foci of the hyperbola will be the two known points.
- In particular, if the eccentricity e of the orbit is greater than $1$, the path of such a particle is a hyperbola.
- A hyperbola is an open curve with two branches, the intersection of a plane with both halves of a double cone.
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What Are Conic Sections?
- The three types of conic sections are the hyperbola, the parabola, and the ellipse.
- In the case of a hyperbola, there are two foci and two directrices.
- Hyperbolas also have two asymptotes.
- A graph of a typical hyperbola appears in the next figure.
- They could follow ellipses, parabolas, or hyperbolas, depending on their properties.
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Conic Sections in Polar Coordinates
- Traditionally, the three types of conic section are the hyperbola, the parabola, and the ellipse.
- The type of a conic corresponds to its eccentricity, those with eccentricity less than 1 being ellipses, those with eccentricity equal to 1 being parabolas, and those with eccentricity greater than 1 being hyperbolas.
- As in the figure, for $e = 0$, we have a circle, for $0 < e < 1$ we obtain an ellipse, for $e = 1$ a parabola, and for $e > 1$ a hyperbola.
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Conic Sections
- Traditionally, the three types of conic section are the hyperbola, the parabola, and the ellipse.
- The type of a conic corresponds to its eccentricity—those with eccentricity less than 1 being ellipses, those with eccentricity equal to 1 being parabolas, and those with eccentricity greater than 1 being hyperbolas.
- If they are bound together, they will both trace out ellipses; if they are moving apart, they will both follow parabolas or hyperbolas.
- Hyperbola.
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Types of Conic Sections
- Hyperbolas have two branches, as well as these features:
- Asymptote lines—these are two linear graphs that the curve of the hyperbola approaches, but never touches
- The general equation for a hyperbola with vertices on a horizontal line is:
- The eccentricity of a hyperbola is restricted to $e > 1$, and has no upper bound.
- The other degenerate case for a hyperbola is to become its two straight-line asymptotes.
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Eccentricity
- Recall that hyperbolas and non-circular ellipses have two foci and two associated directrices, while parabolas have one focus and one directrix.
- Conversely, the eccentricity of a hyperbola is greater than $1$.