已知函数
.
(1)解不等式
;
(2)若不等式
恒成立,求实数t的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4733170354c280d6e13a3508720a6a2c.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8b33cc5994177b42becfac463fd3486.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f51a9e40b5c89f59b0ea0e8300b18f7b.png)
更新时间:2022-09-23 18:57:19
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解答题-证明题
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适中
(0.65)
解题方法
【推荐1】已知
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的最小值为2.
(1)求
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(2)求证:
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
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(1)求
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(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f6d486caa470fd09b26866bd3a3733e.png)
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解答题-问答题
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适中
(0.65)
【推荐2】已知
.
(1)当
时,求
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(2)当
时,证明:
的解集非空.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe26dcc7d21c5591073e0001a538dbc.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790b46a94054fee60cbc4cd9e09ed5c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/256f3981024e53f373a80aad40e994ae.png)
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解答题-问答题
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适中
(0.65)
【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d955e732d97e77c8a8c2aa80e986e0ae.png)
(1)解不等式
;
(2)若关于x的不等式
的解集不是空集,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d955e732d97e77c8a8c2aa80e986e0ae.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03fc1cd2baabbf8afea25478e1258237.png)
(2)若关于x的不等式
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解答题-问答题
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适中
(0.65)
【推荐2】已知函数
.
(1)求不等式
的解集.
(2)记
最小值为
,若
,
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,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9ae2d3402ae8d9335f400d53dfcda50.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a8cb96a9e39bc196289712c325265c.png)
(2)记
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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适中
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名校
【推荐1】设函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c229c63ed13758c88225439beaf8abe0.png)
(1)当
时,解不等式:
;
(2)若不等式
的解集为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c229c63ed13758c88225439beaf8abe0.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0b43222191c8122812c5a6e68048d06.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db53e1f7b993bc9b961253c88bf929b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638ae436448a1dfd4037bb31c8fbb605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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适中
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名校
【推荐2】已知函数
,
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(1)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae40430099c08442eb46892d734bf2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d61307596100b6893adbf23038ccb8e2.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43920f5171ed31db2520ef00e4c5fc24.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799b324b514d6044672c133d8fef2dc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0821dd73cd58f5b7dc26dbea4b7eed29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次