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anonymous
 one year ago
What are the foci of the following graph?
anonymous
 one year ago
What are the foci of the following graph?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0What are the vertices?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0that are covertex, how about main one?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok, it is a vertical ellipse, hence the main one is a, and the co one is b that is a = 6 and b =3 you have the formula to find foci c, which is \(c^2 = a^2 b^2\), hence c =??

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok, it is \(3\sqrt3\) you can take your number.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0One more thing, foci are on the same line with main vertices, right? your main one is \((0, \pm 6)\), hence your foci are \((0,\pm 3\sqrt3)\) Whenever jot down the foci or the vertex, you MUST write the pair of them to make it clear for the shape of the conic.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so what the anwser? im sorry..this confuesses me

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1439513790413:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1439513807160:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0neither of those are a choice

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0That is b , they are allllllllllllllll same.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1439513905893:dw
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