Question

Pre calc Conic Sections, need help.
What is the eccentricity of the equation below?
(x-5)^2 (y+1)^2
------ + ------- =1
52 64

Answer 1

\[
c^2=a^2 -b^2\\
e=\frac c a
\]]

Answer 2

that first formula is to get the foci points right??

Answer 3

You have a and b, find c then e=c/a

Answer 4

how did you figure that out?

Answer 5

sorry a^2=64 and b^2=52

Answer 6

\[
\frac{x^2}{a^2}+\frac{y^2}{b^2}=1
\]

Answer 7

C=√116

Answer 8

so √116/8 right?

Answer 9

\[
c^2=64-52=12
\]

Answer 10

\[
c=\sqrt{12}
\]

Answer 11

oops, I added

Answer 12

How much is e?

Answer 13

√12/64 is irrational, but I can match this up to one of the answers, you are awesome.

Answer 14

no
\[
\frac{\sqrt {12}}{8}=\frac {\sqrt 3}4
\]

Answer 15

aww, none of my answers match

Answer 16

oh, over 8, not 8^2, got it

Answer 17

What are your answers?

Answer 18

√3/4 is one of them

Answer 19

That is it

Answer 20

thx