1 . 等差数列
的前
项和为
,
(
且
),
.
(1)求
的通项公式与前
项和
;
(2)记
,当
,
时,试比较
与
的大小;
(3)若
,正项等比数列
中,首项
,数列
是公比为4的等比数列
,且
,求
的通项公式与
.
![](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/e7fab51121848ce166035ceab6f4e00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec3c9f09e932ad3cc1f3720d93b34c56.png)
(1)求
![](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)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1dcf4e0dd72f254d9eab961b892ae9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15520cf5be7c2685975aac51bc99ac4f.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/385275d29d8c8a7841eaeaa3dfab2cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7afef6271af7462ffa935a1846e3ec90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89ba85f74cda4ddd621278e558bc036f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ee3a47bf7dfe538ae367cc006a69b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ea2efac902bfb513a224c40faef2516.png)
您最近一年使用:0次
解题方法
2 . 已知某地区烟民的肺癌发病率为
,先用低剂量药物
进行肺癌䈐查,检查结果分阳性和阴性,阳性被认为是患病,阴性被认为是无病.医学研究表明,化验结果是存在错误的,化验的准确率为
,即患有肺癌的人其化验结果
呈阳性,而没有患肺癌的人其化验结果
呈阴性.则该地区烟民没有患肺癌且被检测出阳性的概率为__________ ;现某烟民的检验结果为阳性,请问他患肺癌的概率为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5edb1e0c3e2fb29b0b35d51d22a5710d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4091320ff4a500eeb76dfb1ee2db8e86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4091320ff4a500eeb76dfb1ee2db8e86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4091320ff4a500eeb76dfb1ee2db8e86.png)
您最近一年使用:0次
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3 . 有人调查了某高校14名男大学生的身高及其父亲的身高,得到如下数据表:
利用最小二乘法计算的儿子身高
关于父亲身高
的回归直线为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/9b206040-e955-44ae-ace6-f65edde822e0.png?resizew=227)
根据以上信息进行的如下推断中,正确的是( )
编号 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
父亲身高/cm | 174 | 170 | 173 | 169 | 182 | 172 | 180 | 172 | 168 | 166 | 182 | 173 | 164 | 180 |
儿子身高/cm | 176 | 176 | 170 | 170 | 185 | 176 | 178 | 174 | 170 | 168 | 178 | 172 | 165 | 182 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a829fdd8ec0f3b7ede883cf2c3e53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f19021366fa076409e5c673b37001db6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/9b206040-e955-44ae-ace6-f65edde822e0.png?resizew=227)
根据以上信息进行的如下推断中,正确的是( )
A.当![]() ![]() ![]() ![]() |
B.父亲身高和儿子身高是正相关,因此身高更高的父亲,其儿子的身高也更高 |
C.从回归直线中,无法判断父亲身高和儿子身高是正相关还是负相关 |
D.回归直线的斜率可以解释为父亲身高每增加![]() ![]() |
您最近一年使用:0次
4 . 设椭圆
:
的上顶点为
,下顶点为
,焦距与短轴长相等,过
点的直线
与椭圆
交
点,点
不与上、下顶点重合.
(1)求离心率
;
(2)设点
与点
关于
轴对称,设直线
斜率为
,直线
的斜率为
,求
的值;
(3)若直线
过右焦点,且
,求椭圆
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)求离心率
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b881044b5c73db6fcce110525741b02.png)
(3)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d405fe7e7fe6dacdcb912a46e67d8a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
名校
解题方法
5 . 已知
,
,且
在点
处的切线与直线
垂直.
(1)求实数
的值.
(2)若
的图象经过原点,且
,当
时,
过点
的切线至少有
条,求实数
的取值范围.
(3)若
,且
,其中
,
均为正实数.证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2dc19a078760863c7e681e59e0ec56b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c8bb7e252de0e54ca82ad2c36ffba37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/227d4946b9dbfdc8bef33b42b6a82572.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbab1a525c4451a43041defaa18a98f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d9fab43d7bc79776880a47091152b46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa70fa7eb86c3733e2c1f1c7d07dd802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7892b90ae2ff71fd827c95e5aabc3049.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ca96bf407a3ba46ef3c59c5eee4137c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/803b13fac1480b428cb4ee4555852024.png)
您最近一年使用:0次
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6 . 已知
,点
满足:
则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b21cab7ea5dddc9074f11f232a5071.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28daeb41c37060ee27782c174c594af2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5719426319a511a908285b98f2234e92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/550780d0ff9a7f3241dc7fbf2ebb16ab.png)
A.6 | B.4 | C.2 | D.不能确定 |
您最近一年使用:0次
名校
解题方法
7 . 给出下列结论,其中正确的个数是( )
①渐近线方程为
的双曲线的标准方程一定是 ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42dc9b1c1d859072331826a5885137b8.png)
②抛物线
的准线方程是
③等轴双曲线的离心率是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e051d14fd6a787387995331f5e6d026.png)
④椭圆
的焦点坐标是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47fe12118694941292aac1f2140c2e78.png)
①渐近线方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac44899fa21915fd937662c53fad71a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42dc9b1c1d859072331826a5885137b8.png)
②抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25e5b027b28215534a965a9b18ccab4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbef0a1750d3f9a0ac59a7677ec833a.png)
③等轴双曲线的离心率是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e051d14fd6a787387995331f5e6d026.png)
④椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21a358eee9dd00531b860e432af19b52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47fe12118694941292aac1f2140c2e78.png)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
名校
8 . 下列命题正确的个数为( )
①长方体
中,
,
,则异面直线
与
所成角的余弦值为
;
②对于命题:
,
,则命题
的否定:
,
;
③ “
”是“
”的充分不必要条件;
④已知
,
,
,且
,则
的值为
.
①长方体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829018a6ca0aff95d89e3f7cd943274e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64e76a4c1e5934f51cdca2ffbc8313f.png)
②对于命题:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02491f9709f00a1bc169278fbe01f576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecd0737f120bf1bae03b9abbae79e4ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/654120ab17a29dbae5cf9c43860846ca.png)
③ “
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8adaa3d42ccb9d59e0d6b6f60bf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5553e7018e6e14755bbcda2b657c7b03.png)
④已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26b566395b41fc587143d533f9756024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22fc7939259f787ce6d557e59bb3dc15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b1ba2e2dbab8c7bec0dad6b63fcc5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da1e517c0d481c5d62707ed3f6435d71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
A.0 | B.1 | C.2 | D.3 |
您最近一年使用:0次
名校
解题方法
9 . 已知菱形
的边长为2,
,点
是边
上的一点,设
在
上的投影向量为
,且满足
,则
等于________ ;延长线段
至点
,使得
,若点
在线段
上,则
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4f5eec0addba78f2e0cdfb7ecc59a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d021a5c98388463d577675e58068aa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c5f09d2fa877c8253af5c73593b6c38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb542dd0180014011573678815a5dec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02d533f3629fff66cab1c6af2d943ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1fe49fa53c3048b78878fa296bc6a34.png)
您最近一年使用:0次
2023-12-08更新
|
980次组卷
|
4卷引用:天津市和平区天津一中2024届高三上学期第二次月考数学试题
天津市和平区天津一中2024届高三上学期第二次月考数学试题(已下线)第16讲 第六章 平面向量及其应用 章末重点题型大总结(1)-【帮课堂】(人教A版2019必修第二册)(已下线)第一次月考填空题压轴题十四大题型专练-举一反三系列四川省内江市威远中学校2023-2024学年高一下学期期中考试数学试题
名校
解题方法
10 . “数学在晚旁,月也在晚旁.”是时候为《晚旁》写一句诗、做一枚徽标了.“晩旁”徽标是借两个圆设计而成,其状如月(如图1).已知
,其中
.如图
为圆
与
的交点,若弦
将圆
分为长度之比为
的两段弧,则组成“月亮”的两段弧长之比为__________ .(请写出长度较小的弧与长度较长的弧的长度之比,即该比值小于1.)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/109a4a3c69477302a8dd701a2b408662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f4689e7492d26d4f77a0c74d4444550.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d65e051e943ab28fa57aee2fb57994.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/2/bfce779f-2379-4245-9f8f-528b91428588.png?resizew=267)
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2023-12-03更新
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3卷引用:天津市南开中学2023-2024学年高二上学期第二次学情调查数学试卷