计算下列各式:
(1)求值:
;
(2)
.
(1)求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3787f786c55b1ab85e345a22d55ac7cf.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5e9beb4f545da099d9d8921a237e8cf.png)
更新时间:2020-11-27 20:36:09
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【推荐2】(1) 已知
, 求
的值;
(2) 求
的值
(3) 求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ca65d671f250571d8dab75b7f7a3cb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f292291fe6a43d3c1b5de0e56edccab5.png)
(2) 求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39d68524ca7aa110b5292e1503c5fbd8.png)
(3) 求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7438164d459fc8067acb8d2658f6bcb5.png)
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【推荐1】已知函数
.
(1)证明:函数
在区间
上单调递增;
(2)已知
,试比较三个数a,b,c的大小,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50d1a15a360fb1f18366a7a6a34e7833.png)
(1)证明:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7334919736e5ed881f691e4ca738b4ce.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08f69763a4a5da1d08128a49dffcb440.png)
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