名校
1 . 经研究发现,三次函数
都有对称中心,设其为
,则
,反之也成立,其中
是函数
的导函数
的导数.已知
,若对任意的实数
,函数
在
和
处的切线互相平行,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/012429b7101ba0f84e7b45598ed12db9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43db00e106c7d08a76a7ba71ca5e63d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/965b37ac03c097e77a1a5ec7fc9af3b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a7472816f7828f0ef6fad75b136a40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33770cd4511e0f50f2d959ffd913e97f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a3435071e9c50774149b2cd1817478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad4dd3be7b5428975bc9100f2d33732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d71f015144ffaf1faec94a259b4a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e7e52478a86eff946369f37831c25a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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2 . 已知函数
,数列
满足
,则数列
的前2019项和为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/facd59fed0f819c8fe3e993a4d669b26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45ecea0779d8b0af68e673ed64d8c25c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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2020-03-04更新
|
1386次组卷
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4卷引用:2020届黑龙江省哈尔滨师范大学附属中学高三上学期期中数学(理)试题
2020届黑龙江省哈尔滨师范大学附属中学高三上学期期中数学(理)试题2020届陕西省西安交通大学附属中学高三下学期第三次模拟文科数学试题(已下线)4.4 求和方法(精练)-【一隅三反】2023年高考数学一轮复习(基础版)(新高考地区专用)(已下线)专题1 巧用性质 对称求和【讲】
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解题方法
3 . 等差数列
的前
项和为
,若
,则满足
的正整数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
______ .
![](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/51785fc99f097e27659f720bec95d122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a8e1bb201b13f61d9f8916f20925439.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
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4 . 已知函数
,若不等式
对一切实数
恒成立,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91304fdb4219a797b76cfc00b35964bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/572c82ffc21af7a189df93f0558df1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45aec1e4ca31a14444f4bc8682ab5d9f.png)
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2020-03-04更新
|
138次组卷
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2卷引用:2020届江苏省泰州中学高三上学期期中考试数学(理)试题
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5 . 点
是圆
外一点,过点
作圆的两条切线,切点分别为
,则切点弦
所在直线方程为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c24e6ec9c6337dcacf318d891660df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5425108c557f0f21474c045334f97d9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a949c00526fddf435423272cf10f25.png)
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2020-03-04更新
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5卷引用:2020届辽宁省沈阳市第二中学高三上学期12月阶段测试数学(理)试题
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6 . 下列四个命题中正确的序号为_______ .
①在同一直角坐标系中,
的图象与
的图象关于
轴对称.
②在同一直角坐标系中,
的图象与
的图象关于直线
对称.
③函数
满足
,则
的图象关于点
对称.
④函数
满足
,则
的图象关于直线
对称.
①在同一直角坐标系中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/599c580815c72db3be3a986bded699e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d058431c54e8ffaa2dc78c9456d6d90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
②在同一直角坐标系中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/599c580815c72db3be3a986bded699e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc301c9d712306cfbaaa184ee67097d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61553cc84beca40c376b5df1dab29c93.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a705e74db0120801e7264e96e3c7ba1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42476c265ab8c1d5a04ff278ea55216b.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d44519cd7a59e3c5e2d92febd5f6930.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61553cc84beca40c376b5df1dab29c93.png)
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7 . 如图,在正四棱柱
中,P是侧棱
上一点,且
.设三棱锥
的体积为
,正四棱柱
的体积为V,则
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf4f6cb7083bcc07bcd179fde30c10a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11515cc2cf8950a52298d752dc8b7bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4764374bd2fb78e59cd0b283637baeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b659b8d1661a7757a46337bc1fb9860.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/18/1a6fbc37-b996-4187-aa3f-91533a723c04.png?resizew=172)
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2020-03-03更新
|
931次组卷
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6卷引用:2020届江苏省南京师大附属扬子中学高三下学期期初数学试题
名校
8 . 已知抛物线
与直线
在第一、四象限分别交于A,B两点,F是抛物线的焦点,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a20b7da13594244503f88078a57837f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e83dbfdb84f8242f45f877c775901cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
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2020-03-03更新
|
761次组卷
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6卷引用:重庆市巴蜀中学2019届高三下学期适应性月考(七)(理)数学试题
重庆市巴蜀中学2019届高三下学期适应性月考(七)(理)数学试题山东省2020届普通高等学校招生全国统一考试数学试题模拟卷(二)山东省2020届高三新高考模拟猜想卷(三)数学试题(已下线)第九单元圆锥曲线(A卷 基础过关检查)-2021年高考数学一轮复习单元滚动双测卷(新高考地区专用)(已下线)2021届高三数学新高考“8+4+4”小题狂练(6)(已下线)模块检测卷三(A卷 基础过关检查)-2021年高考数学一轮复习单元滚动双测卷(新高考地区专用)
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解题方法
9 . 意大利著名数学家斐波那契在研究兔子繁殖问题时,发现有这样一列数:1,1,2,3,5,8,13,…,其中从第三个数起,每一个数都等于它前面两个数的和,人们把这样的一列数所组成的数列
称为“斐波那契数列”,那么
是斐波那契数列中的第________ 项.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85e91e222cf0faae6630a076b12ab3c1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/1dc28e7a-d701-4c10-9c94-c1c3c3e4e6f9.png?resizew=327)
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10 . 已知
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc278cd6273c5ebe59ffe62bd036389c.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad1452a51adae3a39f3c88c2070353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45199899c9b24f9aaf8b3778bd83941.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc278cd6273c5ebe59ffe62bd036389c.png)
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