log(7) [ (14x-1) / (x-3) ]
问题描述：
log(7) [ (14x-1) / (x-3) ] log(7) [ (14x-1) / (x-3) ]
数学人气：852 ℃时间：2020-06-27 01:45:33
优质解答
log(7) [ (14x-1) / (x-3) ] 即(14x-1) / (x-3)>1
移项(14x-1) / (x-3)-1>1
通分(13x+2)/(x-3)>0
解得：x3
移项(14x-1) / (x-3)-1>1
通分(13x+2)/(x-3)>0
解得：x3
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答
log(7) [ (14x-1) / (x-3) ] 即(14x-1) / (x-3)>1
移项(14x-1) / (x-3)-1>1
通分(13x+2)/(x-3)>0
解得：x3