名校
解题方法
1 . 已知函数
,若对于任意
,
恒成立,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ad59370ae85d812ab7e3421c9808b2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97148e04ca6a9f9dca0aba91ce4e1d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-11-14更新
|
1342次组卷
|
5卷引用:2017年1月内蒙古自治区普通高中学业水平考试数学试题
名校
解题方法
2 . 已知等差数列
满足
,前3项和
.
(1)求
的通项公式;
(2)设等比数列
满足
,
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb334e165679c6cb500c994cffa47147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/701854aa9d701a4b4208d5e4848b3134.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设等比数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aaee408bdec05bbdfcd4b841a331e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbcd03d9ffc473515485c1e6ff0e3840.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec4bdc2a6d4fc387dc621f0b5a268c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2020-03-05更新
|
516次组卷
|
4卷引用:2017年1月内蒙古自治区普通高中学业水平考试数学试题
3 . 已知等差数列
的前n项和为
,
,
.
(1)求数列
的通项公式;
(2)若
,求n的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04e406b775bbaa0ae52dab5b7bd384a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57964a9b6a7c4a9bad33c4316407c24c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b61bd1c49c3310b78a3127ee668ec145.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42623ebd4e2a0911d72da99b254e40d.png)
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解题方法
4 . 一个空间几何体的三视图如图所示,该几何体的体积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/acb1fe83-27c4-4498-b933-f504409c0feb.png?resizew=230)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/acb1fe83-27c4-4498-b933-f504409c0feb.png?resizew=230)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
5 . 若一个与正方体各个面都相切的球的表面积为4π,则此正方体的体积为( )
A.4 | B.1 | C.8 | D.6 |
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解题方法
6 . 若第一象限的点
在直线
上,则ab的最大值是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7903097d9663549d86e6267da59537a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45900deae0489e87fe448948e8091c4.png)
您最近一年使用:0次
7 . 若数列
满足
,
,则数列
的前8项的和
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c4448d3c151f26d9bc7207d8db46e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae9ad4e59d7081cf19021423a984bc29.png)
A.127 | B.255 | C.256 | D.128 |
您最近一年使用:0次
解题方法
8 . 如图,在四棱锥
中,
平面
,底面
是正方形,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/1ffb0f3e-a434-4bed-a7da-6d8e8bcff1f9.png?resizew=185)
(1)求棱
的长;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99926bf272cd757f0985c69b390ebcce.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/1ffb0f3e-a434-4bed-a7da-6d8e8bcff1f9.png?resizew=185)
(1)求棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bbd7c2767c106faf27d6a97ebc8e739.png)
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名校
9 . 下列函数中,为奇函数的是( )
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
10 . 已知圆C经过原点O和点
,圆心在直线
上,则圆心C到弦AO的距离为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54ef7355f64b22c72372c1c1baf3a035.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f129d441ab39d195cb2580c46065d0fb.png)
您最近一年使用:0次