Question

What are the directrices of the hyperbola given by the equation x^2/25 - y^2/81= 1?

Answer 1

\[y=\pm(b/a)x\]

Answer 2

Ok Thank you :)

Answer 3

not sure actually......please confiem

Answer 4

It's wrong.

Answer 5

the answer choices are:

x= \[x = \pm25\sqrt{106}/106\]

Answer 6

thats one of the answer choices

Answer 7

sorry i was writing asymptotes equation..

Answer 8

Do you happen to know the formula for directrix? :S

Answer 9

its \[x=\pm (a/e)\]

Answer 10

e is eccentricity of hyperbola given by
\[e=\sqrt{1+(b ^{2}/a ^{2})}\]

Answer 11

oh ok

Answer 12

Thank you

Answer 13

welcome////////