计算下列各式的值.
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/863ec2ebf7684a97be27a0855a029d63.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a306dbe150cfbf31a76534f427d0abd.png)
更新时间:2021-12-22 07:13:12
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解答题-问答题
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容易
(0.94)
解题方法
【推荐1】设
,
,
,试比较a,b,c的大小关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e87490c3c871f06ed588467319792ba5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b761fd995881a8039dc2d7e82f3a6210.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6a1e7dacfe6510305d4d12ca46b5111.png)
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