1 . 函数
的函数值表示不超过
的最大整数,例如,
.下列结论正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1550a97c21c1d71c9e95dde569668be0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f2ae14cdf62d0a69dda9a58d1ea9640.png)
A.函数![]() ![]() |
B.若![]() ![]() |
C.![]() |
D.所有满足![]() ![]() ![]() |
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2 . 定义二元函数
,同时满足:①
;②
;③
三个条件.
(1)求
的值;
(2)求
的解析式;
(3)若
.比较
与0的大小关系,并说明理由.
附:参考公式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e1234f123ff32cf38037649c3ff329d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a4141252d1d5410adc4da9a3e631b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ffece531ce82696c0920238efdeb113.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/430d72f73ef24e73a937893c26c5c854.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f095fc2b6b7eb7ecdbff0a1e78dcf9b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee684bc0ac2a74bd0fb714e94245070f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aad1be9af99aa2fb00f2de6a215cf1ad.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b3264fcf8cfd754947a33aff79ea9fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
附:参考公式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e1234f123ff32cf38037649c3ff329d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03b320170303e3310f9c8bb29e17d716.png)
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3 . 如图,已知
为抛物线
的焦点,过
的弦
交曲线
于点
(
与
不重合).
为弦
的中点;
(2)连
并延长交拋物线
于点
,求
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0081f35157f23269f089b3390a6d109b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)连
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f955e5cc9f108de6f3ca01e5eb84c52e.png)
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解题方法
4 . 已知函数
若
,且
,则下列关系式一定成立的为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/353372712f9b302d01c9eff8edb1d335.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c71152396d26b0c146e6a3c042bbdae9.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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5 . 已知函数
,
.
(1)讨论
的单调性;
(2)若
有两个零点,求实数
的取值范围;
(3)若
对任意的
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eaa6d55cdb24cff59f22f8a09b27160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/026d50aeb347823e800aa11442b80331.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780876acd6f251de9b8510f4def91b5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb40a36a293471742ce75f6b9635b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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7日内更新
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968次组卷
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5卷引用:山东省菏泽第一中学八一路校区2024届高三5月月考数学试题
名校
6 . 为应对新一代小型无人机武器,某研发部门开发了甲、乙两种不同的防御武器,现对两种武器的防御效果进行测试.每次测试都是由一种武器向目标无人机发动三次攻击,每次攻击击中目标与否相互独立,每次测试都会使用性能一样的全新无人机.对于甲种武器,每次攻击击中目标无人机的概率均为
,且击中一次目标无人机坠毁的概率为
,击中两次目标无人机必坠毁;对于乙种武器,每次攻击击中目标无人机的概率均为
,且击中一次目标无人机坠毁的概率为
,击中两次目标无人机坠毁的概率为
,击中三次目标无人机必坠毁.
(1)若
,分别使用甲、乙两种武器进行一次测试.
①求甲种武器使目标无人机坠毁的概率;
②记甲、乙两种武器使目标无人机坠毁的数量为
,求
的分布列与数学期望.
(2)若
,且
,试判断在一次测试中选用甲种武器还是乙种武器使得目标无人机坠毁的概率更大?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44fed1be8b7e50f18cb90077d9fce8e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e5db9fa0bc36e2308bd3eecd5e78351.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f9f0aaaa2695dff4b08d7a52e4c905e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29be23f689eb01e57963495377501257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66577f4cb97c0d2a213ab1a9a02d1324.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f98df968dec4cb1b7e44cb47a5c216.png)
①求甲种武器使目标无人机坠毁的概率;
②记甲、乙两种武器使目标无人机坠毁的数量为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f2beb272e7c3342233f5cb681ac24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b70d4a3fc3e01b5a6358cf4e57578e6.png)
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7日内更新
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3卷引用:山东省菏泽第一中学人民路校区2024届高三下学期5月月考数学试题
名校
7 . 甲乙两人参加知识竞赛活动,比赛规则如下:两人轮流随机抽题作答,答对积1分且对方不得分,答错不得分且对方积1分,然后换对方抽题作答,直到有领先2分者晋级,比赛结束.已知甲答对题目的概率为
,乙答对题目的概率为P,答对与否相互独立,抽签决定首次答题方,已知两次答题后甲乙两人各积1分的概率为
.记甲乙两人的答题总次数为
.
(1)求P;
(2)当
时,求甲得分X的分布列及数学期望;
(3)若答题的总次数为n时,甲晋级的概率为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d3b5b9038b39e659fdade4a5063edad.png)
(1)求P;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38c9d7f7f9a3e9ec476f5cf7fda97c88.png)
(3)若答题的总次数为n时,甲晋级的概率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bb61ad9ef2dcb36f21d5979e21cfe10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b63edd22b23f84960e7c5e07102e0b9.png)
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2024-06-18更新
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273次组卷
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2卷引用:山东省菏泽市2024届高三下学期二模数学试题
名校
8 . 已知函数
(
为常数),则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd3b8f26d1ccb93973ae89e1d6be3bce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.当![]() ![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.当![]() ![]() ![]() |
D.当![]() ![]() ![]() ![]() |
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2024-06-08更新
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679次组卷
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3卷引用:山东省菏泽市定陶区第一中学2023-2024学年高二下学期5月月考数学试题
名校
解题方法
9 . 已知PC是三棱锥
外接球的直径,且
,
,三棱锥
体积的最大值为8,则其外接球的表面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a15a004f7d47ed595f063e60075223a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c19f0fcacac715a1200770516d1e4a67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
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2024-06-04更新
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792次组卷
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3卷引用:山东省菏泽市第一中学八一路校区2023-2024学年高一下学期第三次月考数学试题
10 . 我们知道,在平面内取定单位正交基底建立坐标系后,任意一个平面向量,都可以用二元有序实数对
表示.平面向量又称为二维向量.一般地,n元有序实数组
称为n维向量,它是二维向量的推广.类似二维向量,对于n维向量,也可定义两个向量的数量积、向量的长度(模)等:设
,
,则
;
.已知向量
满足
,向量
满足
.
(1)求
的值;
(2)若
,其中
,当
且
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39c2af42141367e6e9ff0296c31daa7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62b3b354facacd72bc68da6ac07be453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a48d974578eb15ca117e0cb1b59788d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99aa60676891adca75eac086182a15c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2581496116ddfba6dd03722fd771d5a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5babafd9f4e5c3c222ba25a3de66794.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a48d974578eb15ca117e0cb1b59788d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7cb2f5c0569962cd7c1026f388cb661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99aa60676891adca75eac086182a15c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4492fb816272cd60cf3456c6a064020e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa3e5481ce1f11ea4cb1d1ddc71413.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301fa5679316c282923735aff9285559.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95ac252e9126ab540c0102b941f0ee42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74cac554f22f3655ef6691b2ef821eac.png)
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