已知函数
(
).
(1)若
在
上单调递增,求实数
的取值范围;
(2)当
时,若实数
,
(
),满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b48da2db7da7a05a3ce7562cacdc072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](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/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f80045c953d00cd5f0af06fb3752279.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a415767156945ea8ada9ed3756019fc.png)
19-20高三上·山西长治·阶段练习 查看更多[4]
山西省长治市第二中学2019-2020学年高三11月月考数学(理)试题2020届百校联盟11月普通高中教育教学质量监测考试全国I卷理科数学(已下线)专题14 不等式选讲-【备战高考】2021年高三数学高考复习刷题宝典(解答题专练)(已下线)专题8 导数与拐点偏移【讲】
更新时间:2020-04-06 15:18:08
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解答题-证明题
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名校
解题方法
【推荐1】已知函数
.
(1)若
单调递增,求
的值;
(2)设
是方程
的两个实数根,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/309c63092890ba2dc161bd00908cce75.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eed928f3b9509ffb779bf077fbba9d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ca13a93b5f401c0d39ba52b0cffcb0.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐2】已知函数
.
(1)若
在
上为单调递减函数,求实数
的取值范围;
(2)设函数
,
,若
恰有1个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabd037762fb9a0a64032fb9f21720ad.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a56b9f2d4ffcf56d2de03019ae24473e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/488edf3a8c16496aba7befc78778c98e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d6b2e288ac7946ce52376adc5b92d7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
解题方法
【推荐1】已知函数
.
(1)当
时,
恒成立,求
的取值范围;
(2)当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b59b558f9380d0ddaad4b48490f8ab.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aed39f5aca78934fb383402433fe549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9de235cd4356cc8881ba906ec13d65.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
解题方法
【推荐2】已知函数
,
.
(1)求函数
的极大值;
(2)求证:
;
(3)对于函数
与
定义域上的任意实数
,若存在常数
,
,使得
和
都成立,则称直线
为函数
与
的“分界线”.设函数
,试探究函数
与
是否存在“分界线”?若存在,请加以证明,并求出
,
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd47380305102e11cc930e008d25c75b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d5bccea7ccd7a3c854c6fb4cb5ca75.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43876a5fdbcac476e7eed5a24434a484.png)
(3)对于函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a48d51c7e8a1f5cf3349e07a8ac4f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745408b6bd3b6feab62095c84b81a33d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e88bd707d897ad723c5bf4809f278cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
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