名校
1 . 在
中,角
的对边分别为
,且
,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/494765d1c00be6909bcfc01287a1fc80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-08-07更新
|
583次组卷
|
3卷引用:陕西省榆林市神木中学2021届高三三模理科数学试题
解题方法
2 . 已知函数
,若存在实数t,当
时,有
恒成立,则实数m可以等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5397ee1eb6d157f6ec1e7a878f8d16e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08696f29924fad88f81c45c11149917c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b4c0a28a873bde4fab3e2dd0a174a6c.png)
A.3 | B.6 | C.9 | D.12 |
您最近一年使用:0次
3 . 已知数列
,其中
(a,b是正整数),若2008为数列中的某一项,则
可能的取值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f559e6103728174681d014d368384832.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
A.8 | B.9 | C.10 | D.11 |
您最近一年使用:0次
4 . 已知
的三边长分别为a,b,c,面积为S,且
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/809e9f8f2a857dc649119ea93f4b23f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c825e45000c5eb501bbcd94f29ea2433.png)
您最近一年使用:0次
5 . 已知整数a,b,c为三角形的三边长,其中
,且
,则符合条件的
的个数为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9640cb4b70236b7ef3f388fb7d502d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65f9c88edac18a30697feb5a9956b70b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e77ca5176d6b4a69eb76ecb2aa6bac29.png)
您最近一年使用:0次
6 . 已知
,若存在
,使得
,则a的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b3ad88b91c652ebca05dbc06f3eacbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf20055a60ed12b050669fa09e26827.png)
您最近一年使用:0次
解题方法
7 . 已知无穷数列
满足
,则首项
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23dccc60738f39c78238b0670e4f319b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
您最近一年使用:0次
8 . 设三个实数a,b,c组成等比数列,
且
,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cec12441802f71e803efaf2c62ee588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62b0aeabf8ae1c0b65075144df94e12b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bed75007e8f90ae092c21be5737070d.png)
A.![]() | B.![]() |
C.![]() | D.前三个答案都不对 |
您最近一年使用:0次
名校
解题方法
9 . 已知
的内角A,B,C的对边分别为a,b,c,满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4da02b31ee189684ab3c319948cea115.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e88de527b00d11a61b70679595630975.png)
A.2 | B.1 | C.![]() | D.前三个答案都不对 |
您最近一年使用:0次
2023-07-31更新
|
358次组卷
|
3卷引用:2018年北京大学自主招生数学试题
解题方法
10 . 设数列
的首项
,前n项和
,满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66cb8d349f2380af5f4239e9035765eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67e871b6bbe5d7cf03123a17be7e1432.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48dbf04a571772b43a96c95af443326c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c612fb2fed7c255a981cff9013063f4f.png)
A.![]() | B.![]() |
C.![]() | D.前三个答案都不对 |
您最近一年使用:0次