
Re: [其他] 高中證明

: 請神人求詳細證明步驟,謝謝:)
a1 a2 a3
---- ≦ ---- ≦ ----
b1 b2 b3
令 b2 = t*b2 = s*b3
t*a1 a2 s*b3
則 ------ ≦ ------ ≦ ------
b2 b2 b2
t*b1 ≦ a2 ≦ s*b3
a1 + a2 + a3
----------------
b1 + b2 + b3
t*a1 + a2 + s*b3 t*a1 a1
= ------------------ ≧ ------ = ----
b2 + b2 + b2 b2 b1
同理可證
a1 + a2 + a3 a3
---------------- ≦ ----
b1 + b2 + b3 b3
--
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※ 編輯: aromaQ626 (140.113.136.218), 09/12/2017 21:54:50
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