解题方法
1 . 已知
,函数
.若
是奇函数但不是偶函数,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
_________ ;若
对一切实数x都成立,则a的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84ea471b4f6682519e1627f3ac3eb5db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abdaffa9c15517afe6d7ba6488f88f67.png)
您最近一年使用:0次
解题方法
2 . 已知函数
.
(Ⅰ)若
,求不等式
的解集;
(Ⅱ)若关于
的不等式
在
上恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84f24882c10aaaccd833dd67f6de4674.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/940adbf54e96ecb2bb2637e5f976a3b0.png)
(Ⅱ)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e2405c4822bceae1cf191edb502d3b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d655ee6d4c2285b6f59652360862d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2021-08-06更新
|
159次组卷
|
2卷引用:河南省平顶山市2020-2021学年高二下学期期末数学理科试题
解题方法
3 . 对任意的实数
都有
恒成立,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f49c60fd3d84abfa2834428ef3685d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
4 . 不等式
的解集是
,则
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47c82cebe5dbac0195090a70bd55d1bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71a3619ccbcf65312754a970647014e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
解题方法
5 . 已知关于实数
的不等式
无解.
(1)求实数
的取值组成的集合
.
(2)已知
且
,
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7450fc07e9d175ea52ea190a1342836.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d43cdf12dd6c03d9b59dd1370e2481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be97cd1c7111b654d87d8fbb63b6a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf1f207d69a0a2f522c3bbb9bb60e9e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9900708ff8b02245d7090c8cfa7cae1.png)
您最近一年使用:0次
2021-08-04更新
|
90次组卷
|
2卷引用:河南省许昌市2020-2021学年高二下学期期末数学(理)试题
解题方法
6 . 已知函数
.
(1)解不等式
;
(2)若
对任意
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a901e1b4b76ca9064020b51a1670f21e.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e2405c4822bceae1cf191edb502d3b0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6830dbdbc6a91d268b4a716ba0d43165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2021-08-02更新
|
154次组卷
|
2卷引用:山西省吕梁市2020-2021学年高二下学期期末数学(文)试题
7 . 已知
,若不等式
恒成立,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/033a78acd9688df11feef58fdca2b72d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2021-07-29更新
|
186次组卷
|
2卷引用:江西省吉安市2020-2021学年高二下学期期末数学(文)试题
解题方法
8 . 已知函数
.
(1)求不等式
的解集;
(2)若不等式
在
上恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91616b913d1c11d5fe792d013e5b1e8a.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b51035f9b1a84d36570e1eefa1386a6a.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7113bb3e748adbc1e44d3dba6bb5e91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ead3fdcb8fe8f5eb3dbe7d96cabc28b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2021-07-29更新
|
211次组卷
|
2卷引用:江西省吉安市2020-2021学年高二下学期期末数学(文)试题
9 . (1)求证:
;
(2)若关于
的不等式
的解集不是空集,求参数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa98785013ed83c74a19bcf8c5ff0e2.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36f67255fd2be599ce70c0cd41bc75a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解题方法
10 . 已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4af3879e6229a3c149aa66a75e0af26f.png)
(1)若
,求不等式
的解集;
(2)若不等式
的解集包含
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaa19785f2e470d94631d817d76ece66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4af3879e6229a3c149aa66a75e0af26f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bfbe2eb6c502d3d304bbe3c95b54061.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/254712255cd776695334303cebb07064.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25a4b68d7be63ec223f642976a1087ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次