1 . (理科)已知函数
(
).
(1)当
时,求曲线
在点
处的切线方程;
(2)若函数
有两个极值点
,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8923affba77d55b330a58dd208d84b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9b5e076078240e0c5ad9763a9824d3.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8d549130c5be01b3cb0c48a8cf260e.png)
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2 . 已知函数
(
,
为常数).
(1)当
时,若方程
有实根,求
的最小值;
(2)设
,若
在区间
上是单调函数,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55eb90a8d0f1f99d6c06e4b7f40af3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13c3cb616f2168e4718cb66dbe29fdba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45a10e6095d8805b3f9f9a87886f3aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf87d9d48c3de0a5e9f1a70e51a0bef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
3 . 已知函数
.
(1)求函数的单调区间;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/777d99707645e585ba23591afb49607b.png)
(1)求函数的单调区间;
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/040ed193880d5336323ac175828f167b.png)
您最近一年使用:0次
2020-01-09更新
|
313次组卷
|
2卷引用:青海省玉树州2019-2020学年高三联考数学(理)试题
4 . 如图,四边形
与
均为菱形,设
与
相交于点
,若
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/0aa6bb96-cec0-4033-b403-fe0743e039c8.png?resizew=159)
(1)求证:
平面
;
(2)求直线
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f84f169e50dc59d4f7a8e1e36f5c847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a8083bd859ca71ed9d103672eacff93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6b27bd5f1437c638082a7eec033b4c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/24/0aa6bb96-cec0-4033-b403-fe0743e039c8.png?resizew=159)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04268e9883c3a7f27357532220239cce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2194add18a7df1a23cf1554dc2da1b40.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09d9d486b7f91ba933210dd013a7f2c.png)
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5 . 若复数
对应复平面内的点
,且
,则复数
的虚部为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68f652b4c13657ffddf3c9e7eb262b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83eacd38727f29b2c2c68ee309080fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab83a345cf86a416d307d73cee09b1df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa224ed9be8766a4d0b5138bd57de0f0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 已知等差数列
的前
项和为
,且
,
,则数列
的前10项和为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e540606b9152a9a3d121808ef5dfee7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18d8e8f821111de8075e5c3dfb22a5d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8050391385b496e9c059201e4f12600a.png)
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7 . 点
在椭圆
:
上,
的右焦点为
,点
在圆
:
上,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c536683eed96bf9b10aac0bb296477f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4cd6e25a456b0c875a8a591cd887b3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
8 . 某企业打算处理一批产品,这些产品每箱100件,以箱为单位销售.已知这批产品中每箱出现的废品率只有
或者
两种可能,两种可能对应的概率均为0.5.假设该产品正品每件市场价格为100元,废品不值钱.现处理价格为每箱8400元,遇到废品不予更换.以一箱产品中正品的价格期望值作为决策依据.
(1)在不开箱检验的情况下,判断是否可以购买;
(2)现允许开箱,有放回地随机从一箱中抽取2件产品进行检验.
①若此箱出现的废品率为
,记抽到的废品数为
,求
的分布列和数学期望;
②若已发现在抽取检验的2件产品中,其中恰有一件是废品,判断是否可以购买.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3de0640bc12a9b2ffd7247fa20f1dafd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23466fd31d0666cb9f65dced41188359.png)
(1)在不开箱检验的情况下,判断是否可以购买;
(2)现允许开箱,有放回地随机从一箱中抽取2件产品进行检验.
①若此箱出现的废品率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23466fd31d0666cb9f65dced41188359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
②若已发现在抽取检验的2件产品中,其中恰有一件是废品,判断是否可以购买.
您最近一年使用:0次
2020-01-09更新
|
780次组卷
|
4卷引用:青海省玉树州2019-2020学年高三联考数学(理)试题
9 . 正四棱锥
的体积为
,底面边长为
,则正四棱锥
的内切球的表面积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a5faf3cbb633fc4294c8ce703c64c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7116071164cdc45f5d312a437c68bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06a5faf3cbb633fc4294c8ce703c64c3.png)
您最近一年使用:0次
2020-01-09更新
|
450次组卷
|
2卷引用:青海省玉树州2019-2020学年高三联考数学(理)试题
10 . 已知函数
,若函数
有三个零点,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a8831c75e7b99ee991f1fd6aa9015db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efd39734f918dc3027233caf7df4fead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-01-03更新
|
538次组卷
|
3卷引用:青海省玉树州2019-2020学年高三联考数学(理)试题
青海省玉树州2019-2020学年高三联考数学(理)试题广东省东莞市2018-2019学年高一上学期期末数学试题(已下线)专题16 指数函数与对数函数中的压轴题(二)-【尖子生专用】2021-2022学年高一数学考点培优训练(人教A版2019必修第一册)