Question

Write the equation of an ellipse with foci at (-4, 0) and (-4, -6) and major axis of 10

Answer 1

@dpaInc yeahhhhhhhhh

Answer 2

I got it!

Answer 3

that's great...:)

Answer 4

for the foci is at (-4, 0) and (-4, -6), the major axis is parallel to y-axis
the a=10/2=5, c=(0-(-6))/2=3, so
\[b=\sqrt{5^{2}-3^{2}}=4\]
the basic equation should be
and the foci of it is (0,3) & (0,-3)
move them to (-4, 0) and (-4, -6)
so we can have
\[(y-3) ^{2}/25+(x+4) ^{2}/16=1\]

Answer 5

yep... @AndrewNJ got it...