名校
解题方法
1 . 已知不等式
有实数解.结论(1):设
是
的两个解,则对于任意的
,不等式
和
恒成立;结论(2):设
是
的一个解,若总存在
,使得
,则
,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4350f003d99acfacee70d809fe2ee31b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ba6f1cb9a8489f25f9f9342ae9607d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/171102a883b22fe6ca578efc8926f5b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ba6f1cb9a8489f25f9f9342ae9607d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ad779ee913fe1ab7f72997f6fb7c966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3588c3ae1e2916f00f6774d96a92960c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cbf1211335bcbc0ebb05414669eda0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/171102a883b22fe6ca578efc8926f5b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cbf1211335bcbc0ebb05414669eda0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b73e3f73700e8354d284da479043403c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/439c9658c82c739f05ba7046ad9bb4dc.png)
A.结论①、②都成立 | B.结论①、②都不成立 |
C.结论①成立,结论②不成立 | D.结论①不成立,结论②成立 |
您最近一年使用:0次
2022-06-11更新
|
922次组卷
|
9卷引用:考向03 不等式性质与一元二次不等式(重点)
(已下线)考向03 不等式性质与一元二次不等式(重点)(已下线)第04练 二次函数与一元二次方程、不等式(已下线)第02讲 不等式(已下线)专题02 函数的概念与性质必考题型分类训练-2上海市徐汇区2023届高三三模数学试题上海市光明中学2022届高三模拟(一)数学试题浙江省宁波市余姚中学2022-2023学年高一上学期10月月考数学试题第3章 不等式 单元综合检测(难点)-2022-2023学年高一数学《基础·重点·难点 》全面题型高分突破(苏教版2019必修第一册)2022届上海市普通高等学校招生全国统一考试数学模拟试题(一)
名校
解题方法
2 . (1)若关于
的方程
(
且
有实根,求实数
的取值范围.
(2)若存在实数
(
且
,使得
是(1)中方程的实根,求
的取值范围.
(3)设
,考虑
,使得命题“存在
,
且
”为真命题.对于所有这样的
与相应的
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6a826531e3993b4f27a3d5f92110d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85a8a3abec71df5d1cf31556da7ade0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97709b9f2d8a718c9eff392e9dcc614e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08075b3b73dd2609baad69a496fdd9a8.png)
(2)若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08075b3b73dd2609baad69a496fdd9a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85a8a3abec71df5d1cf31556da7ade0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97709b9f2d8a718c9eff392e9dcc614e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3480c78b5e4f9d967837d481932363bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3480c78b5e4f9d967837d481932363bb.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b511317116f55ff9fe4e441c7815249a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c48e4da908f869244dd5ba4dd3b4a79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32a6e5b8aaed692d8be521e82df5a230.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e96b9e82bc14aea4aca820a2e06d515d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97d7d6cc80432964d0795cdfa2097224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c48e4da908f869244dd5ba4dd3b4a79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b2b2df9539793937470e5a9cf88b5b.png)
您最近一年使用:0次
名校
解题方法
3 . 已知函数
和
.
(1)若
,关于
的不等式
的解集是
.求实数
,
的值;
(2)若
,
,
,解关于
的不等式
;
(3)若
,
,
,对
,总
,使得
,求实数
的取值范围、(注:
表示的是函数
中
对应的函数值,
表示的是
中
对应的函数值.)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e4c6b0d5d741ba353f3152bc5c4505.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c40a11d16dda3cd4b4d1bc0fdb48520c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a01404c66529894678a66d3feb0af9c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5f28031b036e4a37be931d5ff28368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac55d420e554e9a8352c1523a3e0043e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a01404c66529894678a66d3feb0af9c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3a34d6f60032718820c3da2b07786b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5f28031b036e4a37be931d5ff28368.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5220c9a5175faa6c1f1477279d8faefe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d9ddc1050ff5be4bcefc374f7eb23e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df24cad18bc045b24eac02239ae2e78f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0574468ad50a4dec52e8ba4f540121e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5986bb02575c5371ab8e29f2f1ea5669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5f4ebb263923f14d35e7b6df1f1031.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e4c6b0d5d741ba353f3152bc5c4505.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d06ac9c9c906b995c40f1c8696550148.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c40a11d16dda3cd4b4d1bc0fdb48520c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
您最近一年使用:0次
2021-10-20更新
|
266次组卷
|
5卷引用:专题2.4 一元二次不等式恒成立、存在性问题大题专项训练(30道)-举一反三系列
(已下线)专题2.4 一元二次不等式恒成立、存在性问题大题专项训练(30道)-举一反三系列(已下线)重难点02 一元二次不等式恒成立、能成立问题【六大题型】天津市第四十七中学2021-2022学年高一上学期第一次月考数学试题(已下线)期中考测试卷(提升)-2021-2022学年高一数学一隅三反系列(人教A版2019必修第一册)山西省实验中学2022-2023学年高一上学期第一次月考数学试题