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标题: ask for help!!!!! jijing [打印本页]

作者: betty_lee    时间: 2003-3-26 00:01     标题: ask for help!!!!! jijing

ps。f(ab) = f(a)f(b), 问以下选项哪个满足此式 a)f(x)=x+1 b) f(x)= 2/x
c) f(x) = 根号x.

any tips?? thanks a lot!![em00]
作者: tongxun    时间: 2003-3-27 01:10

liangqi:you are a very kind person。




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