1 . 下列不等式中正确的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
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2 . 设
为正整数,已知函数
,
,
. 当
时,记
,其中
. 则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e19024088b481805fd372b7b2ffdd8e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95372397621e3a2fc70a6e198e29f44d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02511beb97ace697703ada6473ed5d4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd600b451b2b7f1680cbbcf36a49703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be308b9f7b2b213abcbcea79f0d42f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9464ddd75dd13f2019e6a868301ff629.png)
A.![]() ![]() |
B.![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
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3 . 某工厂对一条生产线上的产品A和B进行抽检.已知每轮抽到A产品的概率为
,每轮抽检中抽到B产品即停止.设进行足够多轮抽检后抽到A产品的件数与B产品的件数的比例为k,单轮抽检中抽检的次数为x,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95240a8668b864ca18257ef2a8e80932.png)
A.若![]() ![]() |
B.当![]() ![]() |
C.若一轮抽检中x的很大取值为M,![]() |
D.![]() |
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解题方法
4 . 已知数列
满足
,
,
,记数列
的前
项和为
,则对任意
,下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b705494275d3b95c0c1dfe3eaece3456.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/831ddd1d31f3550c0b5db2955440fcf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5e07bf129b073f37b553fbca100172.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
A.存在![]() ![]() | B.数列![]() |
C.![]() | D.![]() |
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解题方法
5 . 已知
是方程
的两根,数列
满足
,
,
.
满足
,其中
. 则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d98919b1335a8b7ca020636d1494ad0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/073c95775e8c6c15c7f2f8a4a2ad050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19a31ae70f96dc4aef6e1ca3ef9fed38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf6746bfcdf694447215a11f5b677d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/140b5428dace7d41a3967db2f60d633e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c071ed6bc646439b162e096e64fbcd50.png)
A.![]() |
B.![]() |
C.存在实数![]() ![]() ![]() |
D.不存在实数![]() ![]() ![]() |
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2024-05-08更新
|
945次组卷
|
2卷引用:浙江省杭州学军中学2024届高三下学期4月适应性测试数学试题
6 . 一个圆锥的侧面展开图是圆心角为
,面积为
的扇形,则下列论断正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0211da37e92f915e781691296578ba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cf1f865bafd4a820406d336d99f8091.png)
A.圆锥的母线与底面所成角的正弦值为![]() |
B.圆锥内部有一个圆柱,并使圆柱的一个底面落在圆锥的底面内,当圆柱的体积最大时,圆柱的高为![]() |
C.圆锥内部有一个球,当球的半径最大时,球的内接正四面体的棱长为![]() |
D.圆锥内部有一个正方体![]() ![]() ![]() ![]() ![]() |
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解题方法
7 . 如图,三棱台
的底面
为锐角三角形,点D,H,E分别为棱
,
,
的中点,且
,
;侧面
为垂直于底面的等腰梯形,若该三棱台的体积最大值为
,则下列说法可能但不一定正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cabc3303519ac16fc998913ad9f349c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5825e3891ce507d4af2e0d9d1a0b74b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e72c5599e326e06217772e409413fd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ce827a56e0203a293d774d134f2adf.png)
A.该三棱台的体积最小值为![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
8 . 已知函数
图象如图1所示,A,B分别为图象的最高点和最低点,过A,B作x轴的垂线,分别交x轴于
,点C为该部分图象与x轴的交点,
与y轴的交点为
,此时
.将绘有该图象的纸片沿x轴折成
的二面角
,如图2所示,折叠后
,则下列四个结论正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/888dcf2660bb3803649ba8966129a77f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77993759b8615ef0b42cb56ef027ff0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/312f91b78abb3c06d747589ffa9209d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4d7e95f2c5bf403b912183e162887b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/068882b775725e852b7817740705ae38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/529b4836786aca156de325464ea2ecd9.png)
A.![]() |
B.![]() ![]() |
C.在图2中,![]() ![]() ![]() |
D.在图2中,若![]() ![]() ![]() ![]() ![]() |
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2024-04-10更新
|
835次组卷
|
2卷引用:湖南省衡阳市第八中学2024届高三下学期高考适应性练习数学试题
9 . 已知点
,直线
相交于点
,且它们的斜率之和是2.设动点
的轨迹为曲线
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b21cab7ea5dddc9074f11f232a5071.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55fb7ec4aa413693f4ecae59fe0e2084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d259822ab64b8626f3893b8432673358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.曲线![]() |
B.![]() ![]() ![]() |
C.曲线![]() ![]() |
D.曲线![]() ![]() ![]() ![]() |
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2024-04-04更新
|
468次组卷
|
2卷引用:新疆乌鲁木齐地区2024届高三第二次质量监测数学试题
10 . 群的概念由法国天才数学家伽罗瓦(1811-1832)在19世纪30年代开创,群论虽起源于对代数多项式方程的研究,但在量子力学、晶体结构学等其他学科中也有十分广泛的应用.设
是一个非空集合,“
”是一个适用于
中元素的运算,若同时满足以下四个条件,则称
对“
”构成一个群:(1)封闭性,即若
,则存在唯一确定的
,使得
;(2)结合律成立,即对
中任意元素
都有
;(3)单位元存在,即存在
,对任意
,满足
,则
称为单位元;(4)逆元存在,即任意
,存在
,使得
,则称
与
互为逆元,
记作
.一般地,
可简记作
可简记作
可简记作
,以此类推.正八边形
的中心为
.以
表示恒等变换,即不对正八边形作任何变换;以
表示以点
为中心,将正八边形逆时针旋转
的旋转变换;以
表示以
所在直线为轴,将正八边形进行轴对称变换.定义运算“
”表示复合变换,即
表示将正八边形先进行
变换再进行
变换的变换.以形如
,并规定
的变换为元素,可组成集合
,则
对运算“
”可构成群,称之为“正八边形的对称变换群”,记作
.则以下关于
及其元素的说法中,正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655c66701407d942ef38d482e6b3ffd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655c66701407d942ef38d482e6b3ffd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c9cbad1e8b405feac6e8fe403f024b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459aa90a6c76081e2150c67d8ac00fc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a11fc62e2874e9ef25a9d62bfc9704a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a2d02e70b2af37d2d226b3c608566bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25e6faeeed98a19d7012c921ca71a046.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/572f76c63e3a74a90a1e6ca5ae401cf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a34726666c0499373270f6ca37136f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/572f76c63e3a74a90a1e6ca5ae401cf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5463eaf01a62bc6a772301d9e2ad19c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28099032d4c04bae47985cd2d4d6d013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/856b4ab24ff3b7d9e0b4d1c945232aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e7b60314b50ef35a3d723f67b6f55a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6e21737c7c4bb66c7bd47c584b6b5cf.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b367f647833446cf684c3ddedb1592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d17d4a6cf11cda87b3dfafaecdec683f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655c66701407d942ef38d482e6b3ffd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e675e81d1b5fa38080ddefcbe94b132e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276509f01529d982ab21e479a4619268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d285dfc71eccabb3730b4d7a2e844fe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e43bf250b8d68f26a3c2f6fb5f92cc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655c66701407d942ef38d482e6b3ffd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4424f7a126daa000c5940787ee564521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4424f7a126daa000c5940787ee564521.png)
A.![]() ![]() |
B.![]() ![]() |
C.![]() |
D.![]() |
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