數學問題 - 推理遊戲

By Carolina Franco
at 2009-03-12T15:18
at 2009-03-12T15:18
Table of Contents
剛剛有寫到這幾題 雖然這好像是國中題目
但是跟解答有點出入 想請問跟版上的人答案是否一樣
謝謝
1.|a|+|b|=5是|a+b|=5的什麼條件?(充分,必要,兩者都有或還是沒有)
2.a^2-ab+b^2=0是a=b=0的什麼條件?
--
--
但是跟解答有點出入 想請問跟版上的人答案是否一樣
謝謝
1.|a|+|b|=5是|a+b|=5的什麼條件?(充分,必要,兩者都有或還是沒有)
2.a^2-ab+b^2=0是a=b=0的什麼條件?
--
--
Tags:
推理遊戲
All Comments

By Genevieve
at 2009-03-15T07:46
at 2009-03-15T07:46

By Eartha
at 2009-03-18T08:09
at 2009-03-18T08:09

By Madame
at 2009-03-22T15:39
at 2009-03-22T15:39

By Zanna
at 2009-03-27T00:46
at 2009-03-27T00:46

By Yuri
at 2009-03-27T07:56
at 2009-03-27T07:56

By Robert
at 2009-03-28T18:02
at 2009-03-28T18:02

By Edith
at 2009-04-02T10:34
at 2009-04-02T10:34

By Cara
at 2009-04-02T15:30
at 2009-04-02T15:30
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