1 . 函数
,若关于
的不等式
有且仅有四个整数解,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cad89a93eb64a1042897ffd26938ae7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9fc22e3670c88df52295930874b5c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
2 . 已知函数
,若
恒成立,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0655ce429e4f68d7fd83485dcab10b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0746f6d7da0d54296692b8ede9330e19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d84fca28db13d8525e905f56b02663f5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
3 . 已知函数
有两个零点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/313a8876020169bd7f1bda1148b31ab4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
4 . 已知函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61e095d4ed34f60cdd5f9f77604a0e97.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
解题方法
5 . 已知函数
,则“
”是“
在
上单调递增”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa9f7cb75c5500ad56dfe0f178dedb92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52fb51c831740d9fe307c03537080448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6d804ef44bfc64f824b0ccef71765e.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
名校
6 . 若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e18e8f616e6a0698d1d4411b4c8761df.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2024高三·全国·专题练习
7 . 已知
,
,
,则a,b,c的大小关系是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf82b2ffcdcdfee6627a7a956d669905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecc57293732654c734ba1b8b449a5eb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e96670a8e01c731b73137a09482bba.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
解题方法
8 . 已知
,
,若
,则
的最小值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/809002602966005cc46049fcf7b83214.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cab63b020fa6d5118d54de37a91e64ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f3790b6ae75b72f2a4993c7507a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de635fb61241a200ba68671bb7af9a46.png)
您最近一年使用:0次
9 . 关于函数
,下列结论中错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bb0e95d311a1bac985c2625ff818b28.png)
A.![]() ![]() | B.![]() ![]() |
C.当![]() ![]() | D.当![]() ![]() |
您最近一年使用:0次
名校
10 . 已知函数
.
(1)
在
的切线斜率为2,求
;
(2)当
时,
①
,证明:
;
②判断
的零点个数,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf5b31ac045f39b71437e883c580f550.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58196b9e63ec00aa1119052b6de6ae12.png)
②判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
您最近一年使用:0次