解题方法
1 . 已知函数
,则下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45f66bd602858b6b31b0888a69740099.png)
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.若函数![]() ![]() ![]() |
D.若对任意实数![]() ![]() ![]() ![]() |
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2 . 已知平面内点集
,A中任意两个不同点之间的距离都不相等. 设集合
,
. 给出以下四个结论:
①若
,则
;
②若
为奇数,则
;
③若
为偶数,则
;
④若
,则
.
其中所有正确结论的序号是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041bc291bff24b4cee0b205da68db1f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2ebdde37c672e10fd4ffe741247e566.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18faaff0b5622f33a1574103fed13edd.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2d3df37e73a8abea815f37dbb3fff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdda00159c36552b8a9a9743324f82a0.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffaac03e1e452f075e86853fef2a33de.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdda00159c36552b8a9a9743324f82a0.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25df56dc9b8169cbf924f39bfa9f7c30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acb931a4b3eaa34e2c6f7dab5650f8af.png)
其中所有正确结论的序号是
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解题方法
3 . 正三棱锥
和正三棱锥Q-ABC共底面ABC,这两个正三棱锥的所有顶点都在同一个球面上,点P和点Q在平面ABC的异侧,这两个正三棱锥的侧面与底面ABC所成的角分别为
,
,则当
最大时,
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc2aaed1e9ead175f30f7130569d0411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dc4c63a548b91061528aa11058de75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea16125a2b2462fc9a5d8e943c32cda.png)
A.![]() | B.![]() | C.-1 | D.![]() |
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2024-05-20更新
|
1009次组卷
|
2卷引用:江苏省苏锡常镇四市2024届高三教学情况调研(二)数学试题
2024·全国·模拟预测
4 . 设有
维向量
,
,称
为向量
和
的内积,当
,称向量
和
正交.设
为全体由
和1构成的
元数组对应的向量的集合.
(1)若
,写出一个向量
,使得
.
(2)令
.若
,证明:
为偶数.
(3)若
,
是从
中选出向量的个数的最大值,且选出的向量均满足
,猜测
的值,并给出一个实例.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3002ec1d3f682537d8632f7e51873530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3bc7da7f00478d38c6be04a9b8c2a72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed7f224dbfc973df2b2fcc19b6f4a7d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aa3f116d2bc5cb71059d7cf32982953.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efbf55e50e6758d381bbdade8cf6b348.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aa3f116d2bc5cb71059d7cf32982953.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2470180ebc5fe02719b8d909e16db95c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22111b1f07e7873e5a156d1937eaac27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd1f0ace9ca0b79929e73af6c201c2e.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac3649308b528fd56545ba102dc42d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32a859898e9905e0524d3a982eb34b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f30f56664446f32dbbc2c5f12a99374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aa3f116d2bc5cb71059d7cf32982953.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32a859898e9905e0524d3a982eb34b6.png)
您最近一年使用:0次
名校
解题方法
5 . 已知函数
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61cc8f08c6ada5499a260607a4c908d7.png)
A.若动直线![]() ![]() ![]() ![]() ![]() |
B.若动直线![]() ![]() ![]() ![]() ![]() |
C.若动直线![]() ![]() ![]() |
D.若![]() ![]() |
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2024-04-19更新
|
737次组卷
|
2卷引用:山东省聊城市2024届高三下学期模拟考试(二模)数学试题
名校
解题方法
6 . 设直线系
(其中0,m,n均为参数,
,
),则下列命题中是真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b73cf02fb24824f6343afb9d255dd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8453a001673a2850320eebc033c3618d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a0a309ce715cd1a9d503c1a201c71ae.png)
A.当![]() ![]() |
B.存在m,n,使直线系M中所有直线恒过定点,且不过第三象限 |
C.当![]() ![]() |
D.当![]() ![]() ![]() ![]() |
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2024-04-15更新
|
635次组卷
|
3卷引用:辽宁省协作校2024届高三下学期第一次模拟考试数学试题
2024·全国·模拟预测
7 . 已知函数
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e7f208b84f43edfc29c747347f6649b.png)
A.当![]() ![]() ![]() |
B.当![]() ![]() ![]() ![]() ![]() |
C.当![]() ![]() ![]() |
D.当![]() ![]() ![]() ![]() |
您最近一年使用:0次
2024·全国·模拟预测
解题方法
8 . 如图,已知长方体
中,
,
,
为正方形
的中心点,将长方体
绕直线
进行旋转.若平面
满足直线
与
所成的角为
,直线
,则旋转的过程中,直线
与
夹角的正弦值的最小值为( )(参考数据:
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a67d8576417f761dd5f583ad3a1555a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e142e0f0e25dc2ad81ec1a7ec6ed866b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e142e0f0e25dc2ad81ec1a7ec6ed866b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/903c1bb6f9fe8f9b9710683a3e601452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e380108ba2cf04e68a5a9393d2b921c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bda192938e6048ac769bad63a27aaf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8906c2d0201e75ff24dca193ce457f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 关于函数的周期性,下列说法正确的有( )
A.![]() ![]() |
B.![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
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名校
10 . 已知
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/525fcafc627cdb6ad7840d659e43f59e.png)
A.![]() ![]() |
B.![]() ![]() |
C.![]() ![]() |
D.若方程![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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2024-03-22更新
|
995次组卷
|
2卷引用:河南省郑州市名校教研联盟2024届高三下学期模拟预测数学试卷