已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a11e5156a010096fb86f5cac77a2e487.png)
(Ⅰ)当
时,解不等式
;
(Ⅱ)若
的最小值为1,求
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a11e5156a010096fb86f5cac77a2e487.png)
(Ⅰ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17a6be8fbe07bf31d7a2a353c51ce8af.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2016-12-03 13:40:15
|
相似题推荐
解答题-问答题
|
较易
(0.85)
名校
解题方法
【推荐1】选修4-5:不等式选讲
已知函数
.
(1)解不等式
;
(2)若不等式
的解集不是空集,求实数
的取值范围.
已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1142c40165eb8e627b04bcbba2c34201.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dd7291d81424145fd8869c1bac9791f.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27bcf1f32f0c8587d122959f9ab1fdc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
解题方法
【推荐2】已知函数
.
(1)解关于
的不等式
;
(2)若函数
的图象恒在直线
的上方,求实数
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6ad6ab82e02b27f0c6cb22210745758.png)
(1)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74dbd58b21a94cf93f4623c07452b102.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e623201b413de82299a7e79cab5307f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
解题方法
【推荐1】已知函数
.
(1)当
时,求不等式
的解集;
(2)若
有解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30378d8b1176a850526c8997b8663815.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2a8a9f4f0d6590de86becb733bd1b6b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9251b025e640117a755903935f833493.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
|
较易
(0.85)
解题方法
【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5841139d3c1e584c67fd4d9296095f47.png)
(1)求不等式
的解集M;
(2)若t为M中最小的正整数,a,b,
,且
,求证∶
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5841139d3c1e584c67fd4d9296095f47.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a82c9327dad8fcd6f296b0dc1028c53.png)
(2)若t为M中最小的正整数,a,b,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e4bba69b5725b64c1e9451e8219b2af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c972f7a3dbaab08e693fc508e94772d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0b7f558f5cac321da785f895025ff76.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
名校
【推荐3】已知函数
.
(Ⅰ)若
,求不等式
的解集;
(Ⅱ)对于任意的正实数
,且
,若
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cd97dd85d96c7404d03aa34280c71ca.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/188281cc0c7af6e95c32b9bbb94ffc21.png)
(Ⅱ)对于任意的正实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46b404cd02a2cbe2e0fc302e34127ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/798624e81701671d2e6e12b9e51dd1f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次