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The answer depends on whether they are the foci of an ellipse or a hyperbola.
A half of a hyperbola is defined as the locus of points such that the distance of the point from one fixed point (a focus) and its distance from a fixed line (the directrix) is a constant that is greater than 1 (the eccentricity). By symmetry, a hyperbola has two foci and two directrices.
hyperbola
Two foci's are found on a hyperbola graph.
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find the constant difference for a hyperbola with foci f1 (5,0) and f2(5,0) and the point on the hyperbola (1,0).
The principal axis of a hyperbola is the straight line joining its two foci.
An ellipse, a hyperbola.
The answer depends on whether they are the foci of an ellipse or a hyperbola.
A half of a hyperbola is defined as the locus of points such that the distance of the point from one fixed point (a focus) and its distance from a fixed line (the directrix) is a constant that is greater than 1 (the eccentricity). By symmetry, a hyperbola has two foci and two directrices.
The foci (plural of focus, pronounced foh-sigh) are the two points that define a hyperbola: the figure is defined as the set of all points that is a fixed difference of distances from the two points, or foci.
The axes of the hyperbola.
hyperbola