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24. Foci: \( (0,0),(4,0) \); major axis of length 6 25. Center: \( (1,3) \); vertex: \( (-2,3) \); minor axis of length 4 26. Center: \( (2,-1) \); vertex: \( \left(2, \frac{1}{2}\right) \); minor axis of length 2

Ask by Rowe Wood. in the United States
Mar 18,2025

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The equations of the ellipses are: 1. For foci at (0,0) and (4,0) with a major axis length of 6: \[ \frac{(x - 2)^2}{9} + \frac{y^2}{5} = 1 \] 2. For center at (1,3) and a vertex at (-2,3) with a minor axis length of 4: \[ \frac{(x - 1)^2}{9} + \frac{(y - 3)^2}{4} = 1 \] 3. For center at (2,-1) and a vertex at (2,1/2) with a minor axis length of 2: \[ \frac{(x - 2)^2}{1} + \frac{(y + 1)^2}{\frac{9}{4}} = 1 \]

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Beyond the Answer

For the foci at \( (0,0) \) and \( (4,0) \) with a major axis of length 6, we can deduce that the center is at \( (2,0) \), and the semi-major axis \( a \) is 3. The distance between the foci gives \( c = 2 \), leading to an equation of the ellipse, \( \frac{(x - 2)^2}{3^2} + \frac{y^2}{\sqrt{5^2}} = 1 \). In the case of the ellipse centered at \( (1,3) \) with a vertex at \( (-2,3) \), we see the semi-major axis is 3. The minor axis of length 4 means the semi-minor axis is 2. Thus, the equation resembles \( \frac{(x-1)^2}{9} + \frac{(y-3)^2}{4} = 1 \). The other ellipse centered at \( (2,-1) \) has a vertical orientation due to the vertex. For each scenario, sketching can really help visualize the ellipses and their properties such as vertices, foci, and axes!

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