1 . 已知函数
.
(1)证明
在区间
内有且仅有唯一实根;
(2)记
在区间
内的实根为
,函数
,若方程
在区间
有两不等实根
,试判断
与
的大小,并给出对应的证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cc5afc1b536e922ed874e17139e79a.png)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2316563595e29fd4279845ab8afc5ba2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/972cfd3677c0f6342a57d3ab58cf0356.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2316563595e29fd4279845ab8afc5ba2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/972cfd3677c0f6342a57d3ab58cf0356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7f5414a3f7ae588b5d9daabe8c0e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c586db37b8d4aa5bed56f56e81fe6c67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16136f93ecf38f592d4b861b9e6333b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba013e6a11d51cfc7fe59d141c9dbc3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450398974b1561ca801e102e16df6789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77397fbf8224ec0ae05cdf385839f70c.png)
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2016-12-04更新
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3卷引用:2016届广西来宾高中高三5月模拟理科数学试卷
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