Q. Write an equation for an ellipse centered at the origin, which has foci at (0,±62) and co-vertices at (±5,0).
Given Information: We are given:Foci: (0,±62)Co-vertices: (±5,0)Since the foci are on the y-axis, this indicates a vertical orientation for the ellipse.
Finding c: The distance between the center and a focus is the value of c in the ellipse equation. We can find c by using the coordinates of the foci.c=62
Finding b: The distance between the center and a co-vertex is the value of b in the ellipse equation. We can find b by using the coordinates of the co-vertices.b=5
Finding a: To find the value of a, we use the relationship between a, b, and c in an ellipse, which is c2=a2−b2. We already know c and b, so we can solve for a.c2=a2−b2(62)2=a2−5262=a2−25a2=62+25a2=87a=87
Writing the Equation: Now we have all the values needed to write the equation of the ellipse in standard form. Since the ellipse is vertically oriented, the a2 term will be under the y2 term and the b2 term will be under the x2 term.The standard form of the ellipse is:(x−h)2/b2+(y−k)2/a2=1Plugging in the values for h, k, a, and b, we get:(x−0)2/52+(y−0)2/872=1x2/25+y2/87=1
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