解题方法
1 . 设函数
.已知对任意的
,都有
.
(1)求实数
的取值集合
;
(2)设
是
中最大的元素,正数
满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4178209ac5db698cc3db1f06e1a3f700.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23995da813bec45bc060152afacb8707.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26e93d8fb77f5bd2c0fc690752dfd771.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143bd451dfa92fc6e4be36089dd5759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e1cda660d1176d8c93210d038cb0fc.png)
您最近一年使用:0次
名校
2 . 已知
.
(1)若
时,求
的解集;
(2)当
时,不等式
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bfbc7399126840bbf736c3212e4bd6a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e251575df7256479ff4d6b77cf5139.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/463303b6a8f353072db18617a65aa572.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2021-05-09更新
|
703次组卷
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4卷引用:江西省九江第一中学2021届高三5月适应性考试数学(理)试题
江西省九江第一中学2021届高三5月适应性考试数学(理)试题新疆乌鲁木齐地区2021届高三三模数学(理)试题新疆乌鲁木齐地区2021年高三三模数学(文)试题(已下线)专题04 函数(2)-备战2022年高考数学(文)母题题源解密(全国乙卷)
3 . 已知函数
,
,
.
(1)解不等式
;
(2)对任意
,
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72157c1977b28de95ae5d0f7f7e09f55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0deae142b32cb0dfc4d359ffebee94bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/515f6cb5239a6b7cc0cf2f903a9722b3.png)
(2)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a432d8338415edab0068b5dbd8cdfc1.png)
您最近一年使用:0次