已知实数a b c 满足|a-1|+|b+3|+|3c-1|=0,求(a·b·c )的2009次方
人气:234 ℃ 时间:2019-11-14 01:35:00
解答
|a-1|+|b+3|+|3c-1|=0,
|a-1|=0,a=1
|b+3|=0,b=-3
|3c-1|=0,c=1/3
(a·b·c )的2009次方
=(-1)的2009次方=-1
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