
[中學] 不等式證明一題請教

想了好幾個禮拜都沒頭緒
求解
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→
06/20 12:41, , 1F
06/20 12:41, 1F
→
06/20 12:42, , 2F
06/20 12:42, 2F
→
06/20 12:58, , 3F
06/20 12:58, 3F
推
06/20 16:16, , 4F
06/20 16:16, 4F
→
06/20 16:17, , 5F
06/20 16:17, 5F
推
06/20 21:13, , 6F
06/20 21:13, 6F
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