名校
解题方法
1 . 已知
三点共线,其中
,点
关于
轴的对称点为点
,给出下面四个结论:
①![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
不可能 为等边三角形;
②设
,则当
最大时,
;
③
;
④当AB不与
轴垂直时,直线
过定点.
其中正确结论的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57988361c24c97a8879a79da797f791b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d4388577dc452ba9d9caf47d81e6f10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1adebff9fb726cd58eda1ef994890901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c2e41c64ac5508a9ba27b697122d6d5.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e1a8c1ddf518d896001b32fa594576b.png)
④当AB不与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
其中正确结论的个数为( )
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
名校
解题方法
2 . 在现实生活中,一个符合实际的函数模型经常是将不同的函数组合得到的,如听音乐家演奏音乐时,我们听到的声音常常就是多种不同乐器产生的声波叠加的结果.在学习了向量和三角函数后,人大附中某研学小组利用所学知识研究若干振幅相同,同频同向的简谐波叠加后,得到新的简谐波的振幅和初相规律,该小组把
(N为正整数)叠加,研究
中的
和
,其中
.
(1)当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46626b75bd7bc420bf32b66e3253b40b.png)
______ .
(2)当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46626b75bd7bc420bf32b66e3253b40b.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2073aefa188a89d515b9d32de5d89c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e289d2f03b9a42c8f61858f1c3b32e1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d52d236ed8d14f8135a0a63d41a351fe.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efb55d413f1ab722e17747c8e99f6c59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46626b75bd7bc420bf32b66e3253b40b.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/722068b39032dd59c01afdba985d65be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46626b75bd7bc420bf32b66e3253b40b.png)
您最近一年使用:0次
名校
3 . 已知
为
维向量,若
,则称
为可聚向量.对于可聚向量
实施变换
:把
的某两个坐标
删除后,添加
作为最后一个坐标,得到一个
维新向量
,如果
为可聚向量,可继续实施变换
,得到新向量
,……,如此经过
次变换后得到的向量记为
.特别的,二维可聚向量变换后得到一个实数.若向量
经过若干次变换后结果为实数,则称该实数为向量
的聚数.
(1)设
,直接写出
的所有可能结果;
(2)求证:对于任意一个
维可聚向量
,变换
总可以进行
次;
(3)设
,求
的聚数的所有可能结果.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a84dcda19adf4e49271709ba3cfe48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c8d69c214ec6ae9233c7c2f21685177.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4754574a3b4f416cae9e3251347907c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/214d9a4f6648f9b37bb3bb9ee078c0b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4453ce4c6d461f1370048150f671497e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aadf9ab510510120699c5eee39ab18b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/201195e69e7d74cf49a9ba32c8b2c3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/201195e69e7d74cf49a9ba32c8b2c3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7db499662471ba1e6879d326104637d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b65d545d67d024b7d19575df07bd4ef3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceee7288022589e3ee1c46f843321b27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/201195e69e7d74cf49a9ba32c8b2c3ab.png)
(2)求证:对于任意一个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ac19e2a797cd0a408316988a63b3755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aadf9ab510510120699c5eee39ab18b.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ac76ff59a7ce5a47c563659ef4e80a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
您最近一年使用:0次
4 . 已知
.在
中,
设
,
定义:
.
设
或
.给出下列四个结论:
①![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3216c7108baab2601471b965ecb5694a.png)
②
;
③若
,则
;
④
,都有
,则
最多有
个元素.
其中所有正确结论的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edec660383c08c26ff438d1b8c7a3177.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c852b101e577e4b7d3af668489b0ea5.png)
设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/888390fce47b31855712344fd536bce1.png)
定义:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21090f6a3148c6c09a6946c4611fcd7.png)
设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2143cab296d997c652c495982e90cb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ddbe12fb60130709d275f169dc99c22.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3216c7108baab2601471b965ecb5694a.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71daa66564dc886bd4c4f19d83396fd4.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616cdc04ccc5cae9cf8b941ebeb45ca6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a0430ebe2730db038a644d8939a0d73.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9d43ee737b96bb2cd0cc241d6e1efb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c2509cacc1596557ea46e0f94e84823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0876215b2fd463d151523cd3c6b447.png)
其中所有正确结论的序号是
您最近一年使用:0次
2024·全国·模拟预测
解题方法
5 . 中国的农历七月初七被称为“七夕节”,象征着爱情与美好.某商场为了迎接“七夕节”的到来,特推出了购物抽奖活动.如图是由一个正方形与正三角形构成的图形,在点
处各安装了一盏灯,每次只有一处的灯亮起.初始状态是点
处的灯亮起,输入程序运行次数的上限
,然后按下开始按钮,程序开始运行,下一次是与
相邻点处的其中一盏灯随机亮起,再下一次是与上一次灯亮处相邻点的其中一盏灯随机亮起.若在运行过程中,点
处的灯再次亮起,则游戏结束,否则运行
次后游戏自动结束.在程序运行过程中,若点
处的灯再次亮起,则顾客获奖.现顾客小王参与抽奖活动.
,求小王获奖的概率.
(2)若
,记游戏结束时程序运行的次数为
,求
的分布列与期望.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1d75df9d80ce1e0b7cb50464e293864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3511d1fa76a49c3a367f87d5dfbe6091.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c345907ebe27888332b1b44c666cc47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
您最近一年使用:0次
6 . 对正整数
,设数列
.
是
行
列的数阵,
表示
中第
行第
列的数,
,且
同时满足下列三个条件:①每行恰有三个1;②每列至少有一个1;③任意两行不相同.记集合
或
中元素的个数为
.
(1)若
,求
的值;
(2)若对任意
中都恰有
行满足第
列和第
列的数均为1.
①
能否满足
?说明理由;
②证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3900a6f09149151f7d8479912e1a48e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1430ce165611dfc92e924a1cdc6c8220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/223f93ed43c7772a367043ae224b75da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0c734e1b65651e598e1a907a041664.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f51c223d60883c551607e8b6e8d7fd7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2dce4d63752586495edc8d58dfc45bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab9cde6077954017c6ac884c0e76662c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5224dcfa6dae1dc0511ad72da8617283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b2c5e187752ef828b307951da554bb.png)
②证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32708eeade6cbb36e1dfda113eececd0.png)
您最近一年使用:0次
名校
7 . 若数列
满足:存在
和
,使得对任意
和
,都有
,则称数列
为“
数列”;如果数列
满足:存在
,使得对任意
,都有
,则称数列
为“
数列”;
(1)在下列情况下,分别判断
是否“
数列”,是否“
数列”?①
,
,
;②
,
;
(2)若数列
,
是“
数列”,其中
且
,求
的所有可能值;
(3)设“
数列”
和“
数列”
的各项均为正数,定义分段函数
,
如下:记
为“不超过
的最大正整数”,
证明:若
是周期函数,则
是“
数列”.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c6a06218d11e25bb394982046bcb13e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d61fdddef33602867458574c0f9479c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c651d6559464374b97c5b1b8936178d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad52924df9291d5d191d18e09374ee1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c88b0322e19fb8dd7e1b8b308e1de38b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c6a06218d11e25bb394982046bcb13e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b302ea115e4df4a6616e1b29be2babf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a63e1e51836aea15eda16b92388b2213.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
(1)在下列情况下,分别判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cab57ce5a3e69a60b3feae9cb3be60f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6065aaa8f3f103d1bc960da8318ce35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c20972c5282fb6dc0633b8d4ba8a0ef.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf57a49040da5f76f5fc8ce9ae471768.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/435456777c8be3ccbf9b64090a4d0468.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45a173784888adf2946382fa093ba53a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2c80c26a794a844127aae7dee87c93b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)设“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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2024-02-23更新
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424次组卷
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3卷引用:信息必刷卷03(北京专用)
名校
8 . 已知
是各项均为正整数的无穷递增数列,对于
,定义集合
,设
为集合
中的元素个数,若
时,规定
.
(1)若
,写出
及
的值;
(2)若数列
是等差数列,求数列
的通项公式;
(3)设集合
,求证:
且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/542b4acf7b25b750fbe7205fd179b978.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/857369257ea1b23ef40ce7e3a0f058af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/233427826eb2233641fc3a9805f6d206.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1202d58cd3ad66e7b23f01024566705b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cc57d8a4f67a040435d8b206d3254bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6510d0816033afa001c130342bb7cda.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e4b5779873cb3f4366dbfdb983dec81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33b6f99a33b14f53fb398a195aa2ec3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac648580405ecaa29e91d45738a08af7.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(3)设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b54e4701d4cb8d0133ad2044a7e0f52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1479e28bf6a8cb64ec7df77cd295f99d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30a6a3d1be93cf6d16ee6e0ce0497f46.png)
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2024-01-21更新
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1334次组卷
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7卷引用:2024年高考数学二轮复习测试卷(北京专用)
(已下线)2024年高考数学二轮复习测试卷(北京专用)北京市朝阳区2024届高三上学期期末数学试题(已下线)专题1 集合新定义题(九省联考第19题模式)讲(已下线)黄金卷01(2024新题型)(已下线)微考点4-1 新高考新试卷结构压轴题新定义数列试题分类汇编广东省江门市开平市忠源纪念中学2024届高三下学期高考冲刺考试(一)数学试卷江苏省常州市华罗庚中学2024届高三下学期4月二模训练数学试卷
名校
9 . 王老师每天早上7:00准时从家里出发去学校,他每天只会从地铁与汽车这两种交通工具之间选择一个乘坐.王老师多年积累的数据表明,他到达学校的时间在两种交通工具下的概率分布如下表所示:
(例如:表格中0.35的含义是如果王老师当天乘地铁去学校,则他到校时间在7:35-7:40的概率为0.35.)
(1)某天早上王老师通过抛一枚质地均匀的硬币决定乘坐地铁还是乘坐汽车去学校,若正面向上则坐地铁,反面向上则坐汽车.求他当天7:40-7:45到校的概率;
(2)已知今天(第一天)王老师选择乘坐地铁去学校,从第二天开始,若前一天到校时间早于7:40,则当天他会乘坐地铁去学校,否则当天他将乘坐汽车去学校.且若他连续10天乘坐地铁,则不论他前一天到校的时间是否早于7:40,第11天他都将坐汽车到校.记他从今天起(包括今天)到第一次乘坐汽车去学校前坐地铁的次数为
,求
;
(3)已知今天(第一天)王老师选择乘坐地铁去学校.从第二天开始,若他前一天坐地铁去学校且到校时间早于7:40,则当天他会乘坐地铁去学校;若他前一天坐地铁去学校且到校时间晚于7:40,则当天他会乘坐汽车去学校;若他前一天乘坐汽车去学校,则不论他前一天到校的时间是否早于7:40,当天他都会乘坐地铁去学校.记
为王老师第
天坐地铁去学校的概率,求
的通项公式.
到校时间 | 7:30之前 | 7:30-7:35 | 7:35-7:40 | 7:40-7:45 | 7:45-7:50 | 7:50之后 |
乘地铁 | 0.1 | 0.15 | 0.35 | 0.2 | 0.15 | 0.05 |
乘汽车 | 0.25 | 0.3 | 0.2 | 0.1 | 0.1 | 0.05 |
(1)某天早上王老师通过抛一枚质地均匀的硬币决定乘坐地铁还是乘坐汽车去学校,若正面向上则坐地铁,反面向上则坐汽车.求他当天7:40-7:45到校的概率;
(2)已知今天(第一天)王老师选择乘坐地铁去学校,从第二天开始,若前一天到校时间早于7:40,则当天他会乘坐地铁去学校,否则当天他将乘坐汽车去学校.且若他连续10天乘坐地铁,则不论他前一天到校的时间是否早于7:40,第11天他都将坐汽车到校.记他从今天起(包括今天)到第一次乘坐汽车去学校前坐地铁的次数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf3baba074e8aeb6f3ea117865bbd1b.png)
(3)已知今天(第一天)王老师选择乘坐地铁去学校.从第二天开始,若他前一天坐地铁去学校且到校时间早于7:40,则当天他会乘坐地铁去学校;若他前一天坐地铁去学校且到校时间晚于7:40,则当天他会乘坐汽车去学校;若他前一天乘坐汽车去学校,则不论他前一天到校的时间是否早于7:40,当天他都会乘坐地铁去学校.记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c5a325806df1a1c3e7ce609fe99085f.png)
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2023-11-27更新
|
2229次组卷
|
8卷引用:黄金卷05
(已下线)黄金卷05(已下线)微考点7-2 递推方法计算概率与一维马尔科夫过程(数列与概率结合)(已下线)第七章 概率初步(续)(压轴题专练)-2023-2024学年高二数学单元速记·巧练(沪教版2020选择性必修第二册)(已下线)第29题 概率压轴大题(1)(高三二轮每日一题) 重庆市西南大学附属中学校2023-2024学年高三上学期期中考试数学试题2024届河北省承德市部分高中二模数学试题河北省衡水市部分学校2024届高三下学期二模考试数学试题江西省南昌市第十九中学2024届高三下学期第三次模拟考试数学试题
解题方法
10 . 已知函数
,对于数列
,若
,则称
为函数
的“生成数列”,
为函数
的一个“源数列”.
(1)已知
为函数
的“生成数列”,
为函数
的“源数列”,求
;
(2)已知
为函数
的“源数列”,求证:对任意正整数
,均有
;
(3)已知
为函数
的“生成数列”,
为函数
的“源数列”,
与
的公共项按从小到大的顺序构成数列
,试问在数列
中是否存在连续三项构成等比数列?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0914c295f572c98dd043d4f84268934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b9599b8c0f6a10d15f408ad651b35c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f6425080aabe41f002230dd5f59ca32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e586e28b5e2d892e5280a912653bb12.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72878dfe2c7a76d76287194ac4bdf4ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729b4033af5b0c9c4889406d2c8294f7.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a386e4d3f92631ed64ca3e2f5f4725.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
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