(选修4-5:不等式选讲)已知函数
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d85b4d12bd774ecc446d02c35f34312.png)
(Ⅰ) 解不等式;
(Ⅱ) 若,
,求证:
.
更新时间:2017-06-03 18:29:30
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解答题-证明题
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适中
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【推荐1】已知函数
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(I)求不等式
的解集;
(II)记函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e980c3a147bdccef4f5165bad2d41c9.png)
(I)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3bee904d65b91d5b07164218f860dd6.png)
(II)记函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d614df446e89afde08eb452950b50748.png)
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您最近一年使用:0次
解答题-证明题
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适中
(0.65)
【推荐2】选修4-5:不等式选讲
已知函数
,且
的解集
满足
.
(1)求实数
的取值范围
;
(2)若
,
为
中的最小元素且
,求证:
.
已知函数
![](https://img.xkw.com/dksih/QBM/2016/11/5/1573128308563968/1573128315052032/STEM/653552df7e4e4633ad7ebf4f660e8b58.png)
![](https://img.xkw.com/dksih/QBM/2016/11/5/1573128308563968/1573128315052032/STEM/580ffad6b5384d3591deda8785bf01d9.png)
![](https://img.xkw.com/dksih/QBM/2016/11/5/1573128308563968/1573128315052032/STEM/66d91d70e69d4c33a2336a6a167e6d57.png)
![](https://img.xkw.com/dksih/QBM/2016/11/5/1573128308563968/1573128315052032/STEM/d9aef4b6e9844da59f129697381e923a.png)
(1)求实数
![](https://img.xkw.com/dksih/QBM/2016/11/5/1573128308563968/1573128315052032/STEM/82d23a67a69e478ebc7c88b97f5c097c.png)
![](https://img.xkw.com/dksih/QBM/2016/11/5/1573128308563968/1573128315052032/STEM/a17ba9cf8efc439685d3b458c4e38c98.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2016/11/5/1573128308563968/1573128315052032/STEM/16a54c0fe7884160a73dd33f104dd65d.png)
![](https://img.xkw.com/dksih/QBM/2016/11/5/1573128308563968/1573128315052032/STEM/3c2b2c2a4c1d467c9ea41c2b892a78fb.png)
![](https://img.xkw.com/dksih/QBM/2016/11/5/1573128308563968/1573128315052032/STEM/a17ba9cf8efc439685d3b458c4e38c98.png)
![](https://img.xkw.com/dksih/QBM/2016/11/5/1573128308563968/1573128315052032/STEM/9c6a09d256d7402bb5a136744685ab3b.png)
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您最近一年使用:0次
解答题-证明题
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适中
(0.65)
解题方法
【推荐1】已知函数
.
(1)解不等式:
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/036fd1de458f1b71cd921b4008e28733.png)
(1)解不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffe9154d21ab270df5227c0acc8fed7.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c70a8a8ae398f287833ce0ac30e1b9c5.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐2】已知函数
.
(1)解不等式
;
(2)若不等式
的解集为
,且满足
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63363e527fa9b4e92446bb50913fe4fe.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e5e587ca42942c63cf7ba196a355a81.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6aeef1ebe8b38ddfac2b14be4c3d530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8794b5e75a89482e857e2eb78e367772.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf22d7d1a965bda25168a233fb6290c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-证明题
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适中
(0.65)
名校
解题方法
【推荐3】已知
.
(1)求不等式
的解集;
(2)若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b356ee435121430e67e3b388909d7fe.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d752d8db8a05b3ec7312f6ac8b64a07.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8610232c77741a37463feba1a66c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72336d5efb68b264c9f0e5e55cfd8b01.png)
您最近一年使用:0次