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㏒3(a+1)=1.㏒2a+log2(a-1)等于什么?
人气:177 ℃ 时间:2020-09-05 01:36:47
解答
㏒3(a+1)=1 ==> a +1 = 3 == > a =2 ㏒2a+log2(a-1) = ㏒2 2+log2(2-1) = 1 + 0 = 1
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