Posted by Paragon on Monday, November 19, 2007 at 12:26am.
Find the equation of a hyperbola with foci of
(0,8), and (0,-8)
and Asymptotes of
y=4x and y=-4x
Please show work!!!
- Adv. Algebra- Conics - Reiny, Monday, November 19, 2007 at 7:34am
In a hyperbola with centre at the origin the equation of the asymptote is y = ±(b/a)x.
so b/a = 4 or b = 4a
Also c = 8
then in a^2 + b^2 = c^2 for a hyperbola
a^2 + 16a^2 = 64
17a^2 = 64
a = 8/√17
using x^2/a^2 = y^2/b^2 = -1
x^2/(64/17) - y^2/(32/17) = -1
17x^2 /64 - 17y^2 /64 = -1
- Adv. Algebra- Conics - Paragon, Monday, November 19, 2007 at 7:45am
Wow it's that easy. I was making it harder that it is.
I think that's how you set it up, but wouldn't 32^2 be 1024
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