已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb8723ab5577de3fb8522db278d2d34e.png)
(1)求不等式
的解集;
(2)若
,函数
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb8723ab5577de3fb8522db278d2d34e.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4dc6bf36a4ee408b630d02e8dd2bc0c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89d6d9f4dc8cad115bf08966fa4de56b.png)
2020高三·全国·专题练习 查看更多[1]
(已下线)专题23 不等式选讲-2020年高考数学(文)母题题源解密(全国Ⅱ专版)
更新时间:2020-08-19 09:48:25
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【推荐1】[选修4-5:不等式选讲]
已知函数
.
(1)求不等式
的解集;
(2)已知
的最小值为
,正实数
,
满足
,求
的最小值.
已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06b7409ea5fb26f7dfe5d4c3e01fd2de.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af7e5cd65bc9d3051c2c72311ca8f88d.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6250619b8d53792539f84a75f6b51d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bff89f055ddbea9c0f900ed61513ea.png)
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【推荐2】已知函数
.
(1)解不等式
;
(2)若
,对任意
,存在
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60fde92511b19f221470df47a5a5d1bb.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/940adbf54e96ecb2bb2637e5f976a3b0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/130024f0aadf64f86f68636d1ed48e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12965bbc260bdbb0df0a110e59fb8d78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1bf60c5e8996d138198fe74f30ce520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/452c8057bdbd6b1803017d91aa00da33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐1】已知函数
.
(1)解不等式
;
(2)对
及
,不等式
恒成立,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64a7809ee1fb390e90806aba2ad66453.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f886c9773bcb74e03e85a8868f0e1fa8.png)
(2)对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047facc6b7c13691f8c2e11accc8300a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad5fe274cfc8da2dacfb65801f344ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0692f4fad35e9190fcd08585ed067020.png)
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【推荐2】已知函数
.
(1)若不等式
的解集为
,求
的值;
(2)设函数
.若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de3fcf80f8b8171e590ec5161177b879.png)
(1)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fbc901cbdb68130ddac3174583dd93c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55115664282a1f688de56111820b716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e58a086b816e9b48072d3c6a7567d087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbfbb25a968f322ad15c032e72b8b2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐3】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/501f618cac9c3c9edb01470ac5aed8dd.png)
(1)当
时,求函数
的定义域;
(2)若对任意的
,都有
成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/501f618cac9c3c9edb01470ac5aed8dd.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2608a57caffde627dbf140ca22a2ff8a.png)
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