名校
1 . 已知四面体
的各个面均为全等的等腰三角形,且
.设E为空间内任一点,且A,B,C,D,E五点在同一个球面上,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da71b0b81d1f86b85b52ab064eebabab.png)
A.四面体![]() ![]() |
B.四面体![]() ![]() |
C.当![]() ![]() |
D.当三棱锥![]() ![]() ![]() ![]() |
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2 . 定义非零向量
的“相伴函数”为
,向量
称为函数
的“相伴向量”(其中O为坐标原点).记平面内所有向量的“相伴函数”构成的集合为S.
(1)设
,求证:
;
(2)求(1)中函数
的“相伴向量”模的取值范围;
(3)已知点
满足:
,向量
的“相伴函数”
在
处取得最大值.当点M运动时,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b84dac41f87e939f6cc39f38dc59b78d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b0e4e35cf9b9f97c19e4b72cc2a1b09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b84dac41f87e939f6cc39f38dc59b78d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abc54bc56c16baa3643686b85a6130e4.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/314bf3721381f67a49fa6a8068f465b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bfc9270aef191b473d38ffe9108b339.png)
(2)求(1)中函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
(3)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d6bb01f1044358cc5fee441bc62489.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bec0705d808bfdd465aa1b585acb628.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e723e57753f0a4fe1ef8ca1aee0e2117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11abb76da45ffa52b47c3a6b9a03ac7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e0e24323fe73e5d9fc6136219306da.png)
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3 . 棱长为2的正方体
中,点
,
,
分别是棱
,
,
的中点,则下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
A.![]() ![]() |
B.![]() ![]() ![]() |
C.平面![]() ![]() |
D.点![]() ![]() ![]() ![]() ![]() ![]() |
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解题方法
4 . 若
,
,且
,则
的最小值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fcbdcb52d7b9e7c54d8382f42e278fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7dc87628c486529f615d51675515d98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dedab547d3f1d4824d6b68f88ef4e80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee4c25755e08df6c44fa0d2be441f709.png)
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5 . 已知函数
.
(1)当
时,求
的单调区间;
(2)当
时,
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1996957bc581e5d03c0f733233e9956.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b269c11e6f9dbbf1a1efcda572f13ea8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1c8abdaf1a883ca6d2fed14f8341696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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6 . 在数列的相邻两项之间插入此两项的和形成新的数列,再把所得数列按照同样的方法不断构造出新的数列.将数列1,2进行构造,第一次得到数列1,3,2;第二次得到数列1,4,3,5,2;…;第
次得到数列
,记
,数列
的前
项和为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6368fec0c2c25db7c29b014d60270e97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75586b07948a2c8b6ad7b4c4002d7d65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb789e230c003bc883ecd5e70d019f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
7 . 在正四棱锥
中,
,
,点
满足
,其中
,
,则下列结论正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd3eb538f36e6e722e4ce125266b99b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91ad040b00b7a307c28dd15829d00a9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79296cd4046a71e163a8f3e647a176ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/994fe2e2ccff825adfe4567a84e0fd79.png)
A.![]() ![]() |
B.当![]() ![]() |
C.当![]() ![]() ![]() ![]() |
D.当![]() ![]() ![]() ![]() |
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8 . 对于数集
,其中
,
,定义向量集
,若对任意
,存在
,使得
,则称X具有性质P.
(1)设
,请写出向量集Y并判断X是否具有性质P(不需要证明).
(2)若
,且集合
具有性质P,求x的值;
(3)若X具有性质P,且
,q为常数且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f7a53ccddc5210a37f12e3ab6e99df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d3fe482c5e20abfc9f89c876f653ae3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966888395e433b9c2a30138e7fb59cb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c122d308af408739c2717376e932122d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37c6bb4424eb1e5ab02b8ac83fd6ad10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8de3dabcc3150fd539ac97718ba10c5.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66317f3834697e2b5642906bb751eb25.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b7511e6ce72a5232820b7007f976be9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/864dd49f786346bc320deace92f949b0.png)
(3)若X具有性质P,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2f5028bb9e126607ef62b402300c1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda6dc559d07bc22c9a0ed1e3a6d01d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57313119f26fc9ba177f6ce7b57ab4f3.png)
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2024-04-23更新
|
312次组卷
|
2卷引用:江苏省南京市金陵中学2023-2024学年高一下学期第一次(3月)学情调研测试数学试题
名校
解题方法
9 . 已知函数
,
,其中a为实数.
(1)求
的最小值;
(2)若任意
,都有
,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/290d887eb4ec68c1c61077f70478bd12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a3059f6640a82d0256f872b13de52e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636289ad84b4a3a51095dd32ca201f94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/901ffd1071fce5da6460f1d6606bd147.png)
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10 . 已知平面直角坐标系中,点
,点
(其中
为常数,且
),点
为坐标原点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/64f2cdf2-72ca-4572-b2ac-94f4d8d6aa49.png?resizew=150)
(1)设点
为线段
近
的三等分点,
,求
的值;
(2)如图所示,设点
是线段
的
等分点,其中
,
①当
时,求
的值(用含
的式子表示);
②当
时.求
的最小值.
(说明:可能用到的计算公式:
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c240561788bc63f41a6703219fb66d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c09615735d331befd07664aa47cb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eae9ba258299eb489b490594397e23c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/64f2cdf2-72ca-4572-b2ac-94f4d8d6aa49.png?resizew=150)
(1)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780971677507adc526873345678e1719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)如图所示,设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e60eadd52137f72532d91289ff1b02e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad44c4d7de6ec62666a516312badd782.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2521506a29dfa82b76370f6621b5e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b79106fb212feba959504862c0a094.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c578add93be18e27b7798a50e5f0d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc35967819fceecd851910f304321f41.png)
(说明:可能用到的计算公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/042722b3af6025400bc0a3bdb34bf92f.png)
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