Question

Can someone please help me with this question
Locate the foci of the ellipse. Show your work.
x^2/36+y^2/11=1

Answer 1

General form is x^2/a^2 + y^2/b^2=1
Where a^2=36 and b^2 =11
C^2 = a^2 - b^2
Where c= distance of focal points from the centre

Answer 2

so what do i do @alekos

Answer 3

just plug and play

Answer 4

Yes. Plug and play

Answer 5

@dan815 hey can you tell me what do do next after this

Answer 6

@Arguedausti793 if you could help me it would be much appreciated

Answer 7

I'm sorry! I don't remember how to do this..

Answer 8

ok

Answer 9

@quick24 what part are you having problems with ?
\[\frac{x^2}{a^2}+\frac{y^2}{b^2}=1 \text{ has center } (0,0)\]
we want to find c
and we can do that by Pythagorean theorem \[b^2+c^2=a^2 \\ \text{ or solving for } c^2 \text{ gives } \\ c^2=a^2-b^2 \\ \text{ then solving for c} \\ c=\sqrt{a^2-b^2}\]