1 . 已知函数
,将
的图象向左平移
个单位长度后,得到函数
的图象.若
,
是关于x的方程
在
内的两个不同的根,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ee6139bee30a4ce2ecf91d9fa9bc87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5639aa1f6b98003e04afb9da10221e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d51992c05a557cf6058664f1f8961e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2a524910e61cc9619b05d473939f26.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
7日内更新
|
398次组卷
|
3卷引用:辽宁省沈阳铁路实验中学2024届高三第八次模拟考试数学试题
名校
解题方法
2 . 若正四面体
的棱长为
,M为棱
上的动点,则当三棱锥
的外接球的体积最小时,三棱锥
的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5d90f940f5693b22ddf2e7c761887d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5d90f940f5693b22ddf2e7c761887d8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
7日内更新
|
924次组卷
|
5卷引用:辽宁省沈阳铁路实验中学2024届高三第八次模拟考试数学试题
名校
解题方法
3 . 已知定义在
上的函数
满足
,且
,若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1ba677dc12c5304da89bc2e95dd4e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ca2e66c203f9aab0b30cf06e72d7db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a23437d77a112dc274b70dd0295bf723.png)
A.![]() | B.![]() ![]() |
C.![]() | D.![]() |
您最近一年使用:0次
7日内更新
|
622次组卷
|
3卷引用:辽宁省葫芦岛市协作校2023-2024学年高三下学期第一次考试数学试卷
名校
解题方法
4 . 将函数
的零点按照从小到大的顺序排列,得到数列
,且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b368c47922b40534ed2c75177466ba56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/352d9b76dcf639368fa68cae70149802.png)
A.![]() | B.![]() ![]() |
C.![]() | D.![]() ![]() ![]() |
您最近一年使用:0次
7日内更新
|
281次组卷
|
3卷引用:辽宁省沈阳市第二中学2024届高三下学期三模数学试题
(已下线)辽宁省沈阳市第二中学2024届高三下学期三模数学试题河南省部分重点高中2023-2024学年高三下学期5月联考数学试卷 (新高考)河南省南阳市淅川县第一高级中学2024届高三下学期三模数学试题
名校
5 . 某学校组织游戏活动,规则是学生从盒子中有放回的摸球且每次只能摸取1个球,每次摸球结果相互独立,盒中有1分和2分的球若干,摸到1分球的概率为
,摸到2分球的概率为
.
(1)若学生甲摸球2次,其总得分记为
,求随机变量
的分布列与期望;
(2)学生甲、乙各摸5次球,最终得分若相同,则都不获得奖励;若不同,则得分多者获得奖励.已知甲前3次摸球得了6分,求乙获得奖励的概率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
(1)若学生甲摸球2次,其总得分记为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
(2)学生甲、乙各摸5次球,最终得分若相同,则都不获得奖励;若不同,则得分多者获得奖励.已知甲前3次摸球得了6分,求乙获得奖励的概率.
您最近一年使用:0次
2024-06-10更新
|
1261次组卷
|
4卷引用:2024年辽宁省普通高等学校招生全国统一考试(模拟2)数学试题
6 . 函数
(
)经过点
,
图象上距离
轴最近的最高点为
,距离
轴最近的最低点为
,若
为坐标原点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec89c3bc454d209007c2b29baeeb3b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70e1a59013f87211094fdce5078bd839.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fe413b12ffabfb252121aa2eaa31017.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fea805a29a745227697f6dce0612839b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.![]() | B.![]() |
C.![]() ![]() | D.![]() |
您最近一年使用:0次
7 . 已知函数
.
(1)当
时,求曲线
在
处的切线方程;
(2)当
时,证明:
为单调递增函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6687279e5f0000eb9d36582b8e1a1e63.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbe45993e6bd636a4f34886bb3d72f42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
8 . 如图,已知菱形ABCD和菱形ADEF的边长均为2,
,
,M,N分别为AE、BD上的动点,且
.
平面EDC;
(2)当MN的长度最小时,求AF与平面MND所成面角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31285c747ac70d3ea0beac9b658d027.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/793e03b60fc5ac445d6d44c508e7e73e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b138770c405307ea4fc828624645e2c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
(2)当MN的长度最小时,求AF与平面MND所成面角的正弦值.
您最近一年使用:0次
解题方法
9 . 设
,则“
”是
的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cef33c94375520acf8e2bbaea905757e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b29171d217e72b44bfcdb9509c7543d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c278321c3100dfab53e34bc70765c007.png)
A.必要而不充分条件 | B.充分而不必要条件 |
C.充分且必要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
解题方法
10 . 柯西不等式在数学的众多分支中有精彩应用,柯西不等式的n元形式为:设
,
,
不全为0,
不全为0,则
,当且仅当存在一个数k,使得
时,等号成立.
(1)请你写出柯西不等式的二元形式;
(2)设P是棱长为
的正四面体ABCD内的任意一点,点P到四个面的距离分别为
,
,
,
,求
的最小值;
(3)已知无穷正数数列
满足:
①存在
,使得
;
②对任意正整数i、
,均有
.
求证:对任意
,
,恒有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a272adba0f1120109824440f0e252c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba031aac09bdee5b36549bb6e68bdb5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a272adba0f1120109824440f0e252c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1602c6064af12eed3fd1291f8272d93c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/944ab11422d7221e45aa4cc6d868828b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34039940c47c92f3660e9dc7c27e5961.png)
(1)请你写出柯西不等式的二元形式;
(2)设P是棱长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5edf900c810371fb21297c15f86d8743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31ac1def558351e2e3ed1235c570530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342d0252c1b2f7d2a84b5c985d19d547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d31659f106fba3c9750661eb0e3c3eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dde93376f5d29f8f7d501122759b0ab.png)
(3)已知无穷正数数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
①存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c24ecf9e59082e563372b12981d03fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1b5cbf6a7e19a347e95de7f119094fb.png)
②对任意正整数i、
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8598147874a35becc05e7bf4d90ce096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a33ac34aa03dc7f0a5faad6dc664ec6.png)
求证:对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5818ede14d21f6df9ef9c2bfe09286c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c229aec38946b710076588b7710381c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d191d6de821fbb06a51b5a20112db6de.png)
您最近一年使用:0次