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题目(2011年全国高中数学竞赛江西省预赛)以抛物线y=x2上的一点M(1,1)为直角顶点,作抛物线的两个内接直角三角形△MAB与△MCD,则线段AB与CD的交点E的坐标为
The subject (2011 National High School Math Competition in Jiangxi province preliminary race) with a point M (1,1) on the parabola y = x2 as the right-angle vertex for two inscribed rectangular right triangles △ MAB and △ MCD, the line AB and CD The intersection of coordinates of E is