Q. Write the equation in standard form for the ellipse with vertices (−11,0) and (11,0), and co-vertices (0,2) and (0,−2).
Calculate semi-major axis: Vertices are (−11,0) and (11,0), so the major axis is horizontal and the length of the major axis is 2a, where a is the semi-major axis.Calculate a: a=11 (since the vertex is 11 units away from the center at the origin).
Calculate semi-minor axis: Co-vertices are (0,2) and (0,−2), so the minor axis is vertical and the length of the minor axis is 2b, where b is the semi-minor axis.Calculate b: b=2 (since the co-vertex is 2 units away from the center at the origin).
Standard form equation: The standard form of the equation for an ellipse with a horizontal major axis is (x−h)2/a2+(y−k)2/b2=1, where (h,k) is the center of the ellipse.Since the center is at the origin, h=0 and k=0.
Plug in values and simplify: Plug in the values of a and b into the standard form equation.Equation: 112(x−0)2+22(y−0)2=1Simplify the equation: 121x2+4y2=1
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