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[函数] 集合问题

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reny posted 2013-9-2 23:34 |Read mode
Last edited by reny 2013-9-2 23:46已知$A=\{a,a+b,ab\},B=\{a,ac,ac^2\},A=B$,求$b,c$的值.

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kuing posted 2013-9-2 23:38
没其他条件?

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original poster reny posted 2013-9-2 23:46
回复 2# kuing
kk,已改!

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kuing posted 2013-9-2 23:56
连整数也没?那怎么确定啊……

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original poster reny posted 2013-9-3 00:02
回复 4# kuing
这是学生问的,可能他在其他班把题都抄错了!那就自行该条件吧,加个$a,b,c\in Z$

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kuing posted 2013-9-3 00:09
还是搞清楚原题再说……

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其妙 posted 2013-9-3 20:55
回复 6# kuing
kk最怕这种辗转反侧的题目了

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福州小江 posted 2013-9-10 08:50
回复 1# reny

集合一般不会在这种题型上设置太高难度!!!学生的问题还是纸质版比较靠谱,坚决不解答学生手抄的题目,经常偷汉子减符号!!!!

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其妙 posted 2013-9-10 12:27
回复 8# 福州小江
,的确学生问的题常常差条件或者抄错。纸质版的较好

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