已知函数
在
上单调递减.
(1)求实数
的取值范围;
(2)若存在非零实数
,
满足
,
,
依次成等差数列.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7c745658cbf190907b7f156bbde645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若存在非零实数
![](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/408f769d0a980dc18f4f47dfced3a0c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6afeede1e920a57feb40fc0cd66b961a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c50e5637e6546f88be2ce57fd503444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a415767156945ea8ada9ed3756019fc.png)
2021·海南·一模 查看更多[2]
更新时间:2020-11-15 16:08:48
|
相似题推荐
解答题-问答题
|
较难
(0.4)
名校
解题方法
【推荐1】已知函数
.
(1)若函数
为增函数,求
的取值范围;
(2)已知
.
(i)证明:
;
(ii)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e43125e0ae8620e175448be664fc025.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d41acc47493556617fe7b9e55093d10.png)
(i)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d4a31a48dda077262eebe7af56fad7d.png)
(ii)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abfc033fc70e74f27fb0da9874199324.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f085cb74f3537d1bccc3f3003834517.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
解题方法
【推荐2】已知函数
.
(1)若
在
上单调递增,求实数
的取值范围;
(2)当
时,对于任意
,存在正实数
,使得
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f8692e9451d67ab500c82c9ab59258.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7dcdd87d593df4a5c5e98d47fe1cfa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e7658ba3a4a4a0fbb0cfc32536234b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ffe7211f84ced45342bea504fd585fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450398974b1561ca801e102e16df6789.png)
您最近一年使用:0次
解答题-证明题
|
较难
(0.4)
名校
解题方法
【推荐3】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65991cd18430d6426d446a1383fce27.png)
(1)若函数
在
存在单调减区间,求实数
的取值范围;
(2)若
,求证:函数
存在极小值;
(3)若对任意的实数
,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65991cd18430d6426d446a1383fce27.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579e2c39e6c0a640357e3b0ccd6f954a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)若对任意的实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb2b22bd03693df72ede10402e318117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5967cc62862986840af4dd29df4bcc41.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)若
,且
存在单调递减区间,求
的取值范围;
(2)若函数
的图象与
轴交于
两点,线段
中点的横坐标为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f9c3d19d781be61fdd0e7f565c73b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2227b1d0ac7f713c2398771c433dda02.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)若
时,恒有
,求a的取值范围;
(2)证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/063a9653c66918410308ea1da50ce5bf.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/350af72fdbf199f310d17650e09a6422.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac17561d7fde0f34e598026bb799deb.png)
您最近一年使用:0次