1设x>0,y>0,x^2-y^2=1,则y/(x-2)的取值范围是?2过抛物线y^2=4x的顶点O作两条互相垂直的直线分别交抛物线与A、B两点,则线段AB的中点的轨迹方程为?
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![1设x>0,y>0,x^2-y^2=1,则y/(x-2)的取值范围是?2过抛物线y^2=4x的顶点O作两条互相垂直的直线分别交抛物线与A、B两点,则线段AB的中点的轨迹方程为?](/uploads/image/z/10251152-8-2.jpg?t=1%E8%AE%BEx%3E0%2Cy%3E0%2Cx%5E2-y%5E2%3D1%2C%E5%88%99y%2F%28x-2%29%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E6%98%AF%3F2%E8%BF%87%E6%8A%9B%E7%89%A9%E7%BA%BFy%5E2%3D4x%E7%9A%84%E9%A1%B6%E7%82%B9O%E4%BD%9C%E4%B8%A4%E6%9D%A1%E4%BA%92%E7%9B%B8%E5%9E%82%E7%9B%B4%E7%9A%84%E7%9B%B4%E7%BA%BF%E5%88%86%E5%88%AB%E4%BA%A4%E6%8A%9B%E7%89%A9%E7%BA%BF%E4%B8%8EA%E3%80%81B%E4%B8%A4%E7%82%B9%2C%E5%88%99%E7%BA%BF%E6%AE%B5AB%E7%9A%84%E4%B8%AD%E7%82%B9%E7%9A%84%E8%BD%A8%E8%BF%B9%E6%96%B9%E7%A8%8B%E4%B8%BA%3F)
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