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Which is the equation of an ellipse centered at the origin with foci on x-axis, x-intercepts +7, -7 and y-intercepts +2, -2?
asked
May 18, 2019
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Which is the equation of an ellipse centered at the origin with foci on x-axis, x-intercepts +7, -7 and y-intercepts +2,
-2?
Mathematics
college
AvinashK
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AvinashK
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Answer:
It's B on edge.
Explanation:
Kashfa Khan
answered
May 21, 2019
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Kashfa Khan
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7
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we know that
foci on x-axis-------> is a ellipse with horizontal major axis
the equation is
(x²/a²)+(y²/b²)=1
major axis is th
e
x
-axis with length
2
a
2a=14--------> a=7
minor axis is the y
-axis with length
2
b
2b=4-----> b=2
the equation is
(x²/a²)+(y²/b²)=1------> (x²/7²)+(y²/2²)=1-----> (x²/49)+(y²/4)=1
the answer is
(x²/49)+(y²/4)=1
see the attached figure
Ricardo Rivaldo
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May 23, 2019
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Ricardo Rivaldo
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