问题
填空题
若x，y是正数，则(x+
|
答案
(x+
)2+(y+1 2y
)2≥2(x+1 2x
) (y+1 2y
) =2（xy+1 2x
+1）≥2（2×1 4xy
×xy
+1）=41 4xy
故答案为4
搜题请搜索小程序“爱下问搜题”
若x，y是正数，则(x+
|
(x+
)2+(y+1 2y
)2≥2(x+1 2x
) (y+1 2y
) =2（xy+1 2x
+1）≥2（2×1 4xy
×xy
+1）=41 4xy
故答案为4
