名校
解题方法
1 . 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
名校
解题方法
2 . 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
|
979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
3 . 【新学法】运用导数研究函数问题的关键一步是条件的翻译,所以请同学们不用解答,写出关键翻译步骤或转化过程.
(1)
,均有
成立,求实数
的取值范围.请写出本题的转化过程,不用计算结果.
(2)已知函数
.设a,b为两个不相等的正数,且
,证明:
.本题解题的关键之一是应把“
”转化为
(3)设
,
,其中a,
.设
,若对任意给定的
,在区间
上总存在
,使
成立,求b的取值范围.本题解题的关键之一是应把“
成立这一条件转化为数学问题:
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3014a553ad914e963a9d0a34583dd277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04e3b2e97106a0651d6756f471e0a610.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13f16ecf00e593999e81a50906659f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aef01d96d9249fe271bdf985850f9b18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a2a62cf41a19cfa86eda86623e569cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aef01d96d9249fe271bdf985850f9b18.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e960bdad0cf39c554f9cc2a364e4378.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab74e118f806b2aa600ea0eb2cccaec7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d285a4c557fc9748105b62ccd94b7859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83a733c45def518ffdb84b1a3c8bc508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede47fb90337bf15538fad3205920f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a48c396dcc3949ecc6a5f7286596d41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7796652c3e8ca4881dc0f894491b9279.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7796652c3e8ca4881dc0f894491b9279.png)
您最近一年使用:0次
名校
4 . 设
表示集合
的子集个数,
,
,其中
.给出下列命题:
①当
时,
是函数
的一个对称中心;
②
时,函数
在
上单调递增;
③函数
的值域是
;
④对任意的实数x,任意的正整数k,
恒成立.
其中是真命题的为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b315521745464732c0eb8c9bcc25aea3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0f6000421c5370e4b89f23be199f388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe6bf548ffe652efcd84268f6b261357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf5776ec7059c208daf01ca48a34915.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e44cbedbe7c27e533c5f7386e77c146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2a878c95349f5757b9c7fa8ff53046.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2a878c95349f5757b9c7fa8ff53046.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ba7039324a6d810f4d5603d4edeb70e.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/548636534994cd465dfc7bf7dd41505b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11dff329bdff8fd70f2299978420d6f0.png)
④对任意的实数x,任意的正整数k,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef1ee0d3a7ef5ef19431e7ee2a38441f.png)
其中是真命题的为( )
A.①③ | B.②④ | C.①③④ | D.②③④ |
您最近一年使用:0次
2023-06-28更新
|
453次组卷
|
3卷引用:天津市蓟州区第一中学2023-2024学年高三上学期第一次学情调研数学试题
5 . 已知
是公比为q的等比数列.对于给定的
,设
是首项为
,公差为
的等差数列
,记
的第i项为
.若
,且
.
(1)求
的通项公式;
(2)求
;
(3)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecea6aa3b0b367dbd8d0e38c65829c33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac24dd2ff15d115696e8a9f8dad264f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f255d0395fba51ca2d44293cca42e0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45c66a0c50c32fba396a322f0ddbeda4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac24dd2ff15d115696e8a9f8dad264f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f686d89f95d2dc846e53eab5ca99ddde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33c0acaa66514a4f1493b158ebd09e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2608df648efc5364a2dc2c67cfe14cd9.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f27dd9877202542cc6975d5a4d78724a.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f88b0922dc08ae6398dfc0296037c759.png)
您最近一年使用:0次
2023-05-20更新
|
1157次组卷
|
3卷引用:天津市南开中学2023-2024学年高三下学期第五次月考数学试题
名校
解题方法
6 . 已知函数
,其导函数为
,设
,下列四个说法:
①
;
②当
时,
;
③任意
,都有
;
④若曲线
上存在不同两点
,
,且在点
,
处的切线斜率均为
,则实数
的取值范围为
.
以上四个说法中,正确的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06ed50e930270b0c87bf92d7e2ac9aaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c532b5af7b88f1c21a7584cfac5fea6c.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7667e3a020f9d2883ffbaaed15e271b1.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee20c6d21a9d928066f304366965d21.png)
③任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00dabe80be1ec903aab583de07bd072f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7a1783349936cc7254a4a8694c6812.png)
④若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df52d934120d01bb008ff93115f09d93.png)
以上四个说法中,正确的个数为( )
A.3个 | B.2个 | C.1个 | D.0个 |
您最近一年使用:0次
名校
7 . 已知函数
有最大值
,
(1)求实数
的值;
(2)若
与
有公切线
,求
的值.
(3)若有
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91c20849a830a86f287b7913a7b4652.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12be206d66e65eb92ef08bad8cd8f71d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/845e5670761cc50147a6f50bc2a30b60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c939c087e55933859467ac8c5c57dfce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a18d6ca6f17a219faad5eebc5ec5f1.png)
(3)若有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b867c903bdbadb2f47301f64fa3213f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a18d6ca6f17a219faad5eebc5ec5f1.png)
您最近一年使用:0次
名校
解题方法
8 . 已知
为坐标原点,双曲线
和椭圆
均过点
且以
的两个顶点和
的两个焦点为顶点的四边形是面积为
的正方形.
(1)求
,
的方程;
(2)是否存在直线
,使得
与
交于
,
两点,与
只有一个公共点,且
?证明你的结论;
(3)椭圆
的右顶点为
,过椭圆
右焦点的直线
与
交于
、
两点,
关于
轴的对称点为
,直线
与
轴交于点
,
,
的面积分别为
,
,问
是否为定值?若是,求出该定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbd89df0f194cffb5b440e8c7f983cb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a258893e87121fc82b385e9a0c149ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75b5520d51d00cdf0d3adecc83faa62f.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/61128ab996360a038e6e64d82fcba004.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)是否存在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.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/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f67c8e3d9a5e7713b6f5d6b0e8fbdb.png)
(3)椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.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/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a03c5e1e4e2669563b22dcf05bfb9b8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/467a7b2829ea7f2573865b43fd66d937.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84a9dabb53dc826019fc8b6ae6d940c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
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2022-01-14更新
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574次组卷
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4卷引用:天津市耀华中学2021-2022学年高三上学期第三次月考数学试题
真题
解题方法
9 . 函数y=f(x)在区间(0,+∞)内可导,导函数
是减函数,且
.设x0∈(0,+∞),
是曲线y=f(x)在点(x0,f(x0))的切线方程,并设函数
.
(1)用
表示m;
(2)证明:当x0∈(0,+∞)时,
;
(3)若关于x的不等式
在[0,+∞)上恒成立,其中a,b为实数,求b的取值范围及a与b所满足的关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e808873b814cf720131eeed83e88bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae0195b09df4650c8e818131f4608000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b256345d7109e081b7c895591e995d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46240f61b85f15c0ef80b30b599c9772.png)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ba09c544777391218919e9146d45ad2.png)
(2)证明:当x0∈(0,+∞)时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e653994b245fbdc2ac3458429c65e69e.png)
(3)若关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c070bd52b36f70fe52b7d5187de1163.png)
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2021-12-09更新
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3卷引用:天津市南开区南大奥宇培训学校2020-2021学年高三上学期第一次月考数学试题
天津市南开区南大奥宇培训学校2020-2021学年高三上学期第一次月考数学试题2005年普通高等学校招生考试数学试题(辽宁卷)(已下线)考点20 导数的应用--不等式问题 2024届高考数学考点总动员【练】
名校
解题方法
10 . 已知边长为
的正△ABC,内切圆的圆心为O,过B点的直线l与圆相交于M,N两点,(1)若圆心O到直线l的距离为1,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c306eb3288b5d505dfb5773aa7e3dd8b.png)
_____________ ;(2)若
,则
的取值范围为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41322821ce31416fdac8dd6e0aa41c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c306eb3288b5d505dfb5773aa7e3dd8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8978ddfc75ae87b3f8400d025f028b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febf7413b35cf2889fdb57a6b519087c.png)
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2021-11-10更新
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3卷引用:天津市宝坻区大口屯高级中学2021-2022学年高三上学期第二次月考数学试题
天津市宝坻区大口屯高级中学2021-2022学年高三上学期第二次月考数学试题天津市第二中学2021-2022学年高三上学期期中数学试题(已下线)热点06 平面向量、复数-2022年高考数学【热点·重点·难点】专练(新高考专用)