选修4-5:不等式选讲
已知函数
.
(1)求不等式
的解集;
(3)若函数
的最小值不小于
的最小值,求
的取值范围.
已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34057d0e878d2252eaff27d6b28db427.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/188281cc0c7af6e95c32b9bbb94ffc21.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/597c96270384d5d7b5ca87e204c88c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2018-07-04 22:29:40
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适中
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【推荐1】已知函数
.
(1)当
时,求不等式
的解集;
(2)令
,
的图象与两坐标轴的交点分别为
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,
,若三角形
的面积为
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31575edf2ce1cd6275ac7140f2f4e7a6.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e799e937076aa5a7dcd51cdc0f40f6b0.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2f3b9d4e2c69fde9d77434b8b98e7a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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适中
(0.65)
【推荐2】已知函数
,且
的解集为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeda8a305271492a5ae50e1c1759e555.png)
(1)求
的值;
(2)若
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29de2d27aa8a07a6ea6b6be9e0354a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
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(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1485a4756c56f1126b9825d5019d544c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a033ba22c49b5fc97b9710ff218e718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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1】选修4-5:不等式选讲
(Ⅰ)求
的值;(Ⅱ)若
求证:
.
已知不等式 的解集为
.
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e3d325f31006e62d95d8290aeea4731.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/120b6fbae6d3879fa059e02e505ab8a7.png)
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适中
(0.65)
【推荐2】设函数f(x)=x+|x-a|.
(1)当a=2 019时,求函数f(x)的值域;
(2)若g(x)=|x+1|,求不等式g(x)-2>x-f(x)恒成立时a的取值范围.
(1)当a=2 019时,求函数f(x)的值域;
(2)若g(x)=|x+1|,求不等式g(x)-2>x-f(x)恒成立时a的取值范围.
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