If the solution set of inequality (A-1) x < A-1 about X is x > 1, then the value range of a is () A. a>1B. a≥1C. a<1D. a≤1
Since the solution set of inequality (A-1) x < A-1 is x > 1, the direction of inequality sign has changed: x > a − 1a − 1, it can be judged that A-1 < 0, so a < 1
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