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OpenStudy (bloomlocke367):
What are the foci of the ellipse? Graph the ellipse. 18x^2+36y^2=648
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ganeshie8 (ganeshie8):
start by putting the ellipse in standard form (divide 648 both sides)
OpenStudy (bloomlocke367):
ohhhhh... ok, I was wondering what to do. XD
OpenStudy (bloomlocke367):
\[\frac{ x^2 }{ 36 }+\frac{ y^2 }{ 18 }\]
OpenStudy (bloomlocke367):
right?
OpenStudy (bloomlocke367):
and it'll equal one... I forgot to put that in
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ganeshie8 (ganeshie8):
Yep! so the ellipse is clearly horizontal. |dw:1424959541739:dw|
OpenStudy (bloomlocke367):
how can you tell if it's horizontal?
ganeshie8 (ganeshie8):
|dw:1424959602694:dw|
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