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题型:解答题 题类:常考题 难易度:普通

辽宁省本溪市2021-2022学年八年级上学期期末数学试题

如图所示,已知 , 试判断的大小关系,并说明理由.

解:                  ▲                  

证明:∵                  ▲                  

                  ▲                  

∴(                  ▲                  

                  ▲                  

                  ▲                  

                  ▲                  ).

                  ▲                  

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