MathDB

11

Part of 1998 National High School Mathematics League

Problems(1)

Analytic Geometry

Source: 1998 National High School Mathematics League, Exam One, Problem 11

3/9/2020
If ellipse x2+4(yāˆ’a)2=4x^2+4(y-a)^2=4 and parabola x2=2yx^2=2y have intersections, then the range value of aa is________.
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