解题方法
1 . 方程
有三个互不相等的实根,这三个实根适当排列后可构成一个等比数列,也可构成一个等差数列,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
______ ,该方程的解集为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9c8f4e44e0f69911361b52d467849a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
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名校
2 . 为了研究小滑块在平面上的运动,测量得到如下一组数据:
这组数据的线性回归方程经过点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
______ .
时间(s) | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
位移(cm) | 1.8 | 3.6 | 5.3 | 7.1 | 8.8 | 10.4 | 12.0 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66719ea061a3dd5dd8cfe5d600887089.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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解题方法
3 . 若实数列
满足
,有
,称数列
为“
数列”.
(1)判断
是否为“
数列”,并说明理由;
(2)若数列
为“
数列”,证明:对于任意正整数
,且
,都有![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce97bb4c969108ebef4ebadd5acc5ca4.png)
(3)已知数列
为“
数列”,且
.令
,其中
表示
中的较大者.证明:
,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08fee3639b8e3ff9717f3ffd9633927f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8414472e2121e1796eb40408d820053a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81f1bc95528c774ce919f7c5a0ef0d5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4d7e68d0c8bd9a32d826c721ab74d9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e517c32ed93de4d9cb6e0926337000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce97bb4c969108ebef4ebadd5acc5ca4.png)
(3)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93846b72089bd425864969f2edabdb8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8957564d30af14db69fdc36be2eaee7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/065f8a641aab5c39f73be89a6f2e7a65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4dc7e8bd20e9d38b4d248a8c253ccd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86e8131eb05d480f0da6c61ebda3ce48.png)
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4 . 已知数列
,则它的第8项为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f2564ee88b0c3a87482223c317417f0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 对于有穷数列
,若存在等差数列
,使得
,则称数列
是一个长为
的“弱等差数列”.
(1)证明:数列
是“弱等差数列”;
(2)设函数
,
在
内的全部极值点按从小到大的顺序排列为
,证明:
是“弱等差数列”;
(3)证明:存在长为2024的“弱等差数列”
,且
是等比数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce381e1cb026a858d8c7b94e1754844.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43a56a30994f7d7e2f15da593b05a56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0a56586686dfb815fe548957ddcfefb.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1947fd8b1e5fa9096c13256fdb3a23ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7833e32ccdb51745b01fc7877762492.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20655342f9ace8b50a50f5eae6f37beb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20655342f9ace8b50a50f5eae6f37beb.png)
(3)证明:存在长为2024的“弱等差数列”
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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解题方法
6 . 如图,
是矩形
所在平面外一点,
,二面角![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
为
,
为
中点,
为
中点,
为
中点.则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93b9239263f68a3c495a2b443fcedf7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27f35abf35a6045f10dd7f681fea6fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
A.![]() | B.![]() ![]() |
C.![]() | D.![]() ![]() ![]() |
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7 . 光源
经过平面
反射后经过
,则反射点
的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/484526eee28b263cd0045435e1531f75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8e4aaecb821e7f5d405a03b97616856.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88afbdd15462200c870472afc0b11abd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024·全国·模拟预测
8 . 杭州亚运会的成功举行,让世界进一步了解中国,志愿者们的微笑,也温暖了全世界.运动会期间,需从4位志愿者中选3位安排到
三个不同的工作岗位,每个岗位1人,其中甲不能安排在
岗位,则不同的安排方法共有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
A.9种 | B.12种 | C.15种 | D.18种 |
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解题方法
9 . 某城市运动会的组委会安排甲、乙等5名志愿者去足球、篮球、排球、乒乓球4个比赛场馆从事志愿者活动,每人只去一个场馆,若排球场馆必须安排2人,其余场馆各安排1人,则不同的方案种数为( )
A.48 | B.52 | C.60 | D.68 |
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10 . 已知函数
为实数,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a4889dcf212fdd165b1da68bfe18e99.png)
A.当![]() ![]() ![]() |
B.存在![]() ![]() ![]() |
C.当![]() ![]() ![]() |
D.若函数![]() ![]() ![]() ![]() |
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2024-04-22更新
|
978次组卷
|
3卷引用:模块3 专题1 第2套 小题进阶提升练【高二人教B】