已知函数
.
证明:(1)
在区间
存在唯一极大值点;
(2)
有且仅有1个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12aec05987b9d97e8c54ea473af182ba.png)
证明:(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ff8dca35b759d3051b62badd7d76bc.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
更新时间:2019-11-04 09:51:49
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解题方法
【推荐1】设函数
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其中
为自然对数的底数.
(1)当
时,判断函数
的单调性;
(2)若直线
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(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ac9eb4f13a6ec140f7050e8d7dde52c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0d40557a31d4fdf3ddcd2b828f93c86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
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名校
解题方法
【推荐2】某排球教练带领甲、乙两名排球主力运动员训练排球的接球与传球,首先由教练第一次传球给甲、乙中的某位运动员,然后该运动员再传回教练.每次教练接球后按下列规律传球:若教练上一次是传给某运动员,则这次有的概率再传给该运动员,有
的概率传给另一位运动员.已知教练第一次传给了甲运动员,且教练第
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(1)求
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(2)求
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(3)设
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【推荐1】已知函数
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(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b86304c3e26200299a0480641525a283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf858fb71bef8fcadf0459fc019a9ebd.png)
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【推荐2】已知函数
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(1)若函数
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(1)若函数
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(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f26a6ffed5c91ce744a2be8ca57159.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1501063eeb493e8919f16f9bba4a3567.png)
您最近一年使用:0次
解答题-问答题
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较难
(0.4)
【推荐1】设函数
,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/346ca3a3cdee16abcc9db71f1e59f485.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8a0ce672d5dc7b1e016f57494514ac.png)
(1)试研究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01a280c4729091d867cfb43dc342167f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43920f5171ed31db2520ef00e4c5fc24.png)
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随着
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
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(2)若函数有两个零点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ce7e34989b457d5eca46730882370c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21d3ed235c91facf2bfd9922805ed74a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7716ce6aea87d0e20e479b630c6e1df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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