请用高中不等式解决一道初中几何题已知:正方形ABCD的边长为4,点E在边BC上,CE=1,线段MN在对角线AC上,MN=根号2,连BM,EN.问3、当线段MN在对角线AC上运动时,BM+EN的最小值为多少?答案是根号13.除了初
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