Find an equation of the hyperbola having the given foci and difference of focal radii.

Question

anonymous · Answer

(0,-2),(8,-2);2

anonymous · Answer

@ganeshie8

amistre64 · Answer

how would you explain what a 'difference of focal radii' defines?

anonymous · Answer

is it the same as the distance between the two?

amistre64 · Answer

different authors use it differently.

its used by some to mean a distance from center to focus

others use it to define the common distance from focus to points on the curve.

ikram002p · Answer

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amistre64 · Answer

from mathwords site.  the focal radii of a hyperB is a constant and is the distance between verts

anonymous · Answer

okay, do I use the distance formula?

ikram002p · Answer

lets f11,f2 be the foci
and p1 any point in the hyperbola
then the focal raddi = |p1f1-p1f2|
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amistre64 · Answer

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