SOLUTION: how would you find the foci of this ellipse? x^2+9y^2=1

Question 194128This question is from textbook
: how would you find the foci of this ellipse?
x^2+9y^2=1 This question is from textbook

Answer by RAY100(1637) (Show Source): You can put this solution on YOUR website!
The standard form of an ellipse is: x^2/a^2 + y^2/b^2 = 1
,
and the foci are at (+/-c,0 ) where c^2 = a^2 - b^2
,
We might need to review your problem,
,
It might be better if it were: x^2 +9y^2 = 9
,
dividing by 9
,
x^2 /9 +y^2/1 =1,,,,,,now fits form with a^2=9,,,,a=3, b=1
,
now foci are ,,, c^2 = a^2 - b^2,,, c^2 = 9 - 1 = 8,,,, c = +/- 2.83
,
foci located at (2.83,0),,,,and (-2.83,0)
,
again pls check original problem, thanks
RELATED QUESTIONS
: how would you find the foci of this ellipse?... (answered by nerdybill,stanbon)

Please help me find the vertice and foci for this ellipse:... (answered by lwsshak3)

Find the center, vertices, foci and eccentricity of the ellipse... (answered by ikleyn)

How do you find the center, vertices, and the foci of the ellipse?... (answered by ewatrrr)

Please help me with this! Find the centre, vertices, lenght of latus rectum, foci ,... (answered by ikleyn)

Find the vertices and foci of the ellipse given by:... (answered by mathslover)

Find the foci this ellipse equation. Carefully graph the ellipse. Identify the... (answered by richwmiller)

Find the center, vertices, and foci of each ellipse. (a.) (x+9)^2/4 + (y-18)^2/100=1 (answered by lwsshak3)

How do i find the vertices and foci of;... (answered by lwsshak3)