解题方法
1 . 已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7f190b6bc4f6339fba7d52e694012c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/680d0484e904c1a1a381691e3d6d3d6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae63c24c584d1f24b151287a2d13697d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2卷引用:陕西省安康市高新中学2023-2024学年高一下学期6月月考数学试题
2 . 演讲比赛中,12位评委对小李的演讲打出了如下的分数:
若去掉两个最高分,两个最低分,则剩下8个分数的平均数为( )
9.3 | 8.8 | 8.9 | 9.0 | 8.9 | 9.0 |
9.1 | 8.7 | 9.2 | 9.0 | 9.1 | 9.2 |
A.9.075 | B.9.05 | C.9.025 | D.9 |
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3 . 三个不互相重合的平面将空间分成
个部分,则
的最小值与最大值之和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
A.11 | B.12 | C.13 | D.14 |
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2卷引用:陕西省安康市高新中学2023-2024学年高一下学期6月月考数学试题
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4 . 若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2db42130905e60a94a73e15bea3e463.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2卷引用:陕西省安康市高新中学,安中分校2024届高三下学期模拟预测理科数学试题
解题方法
5 . 近两年旅游业迎来强劲复苏,外出旅游的人越来越多.A,B两家旅游公司过去6个月的利润率统计如下:
利润率
,盈利为正,亏损为负,且每个月的成本不变.
(1)比较
,
两公司过去6个月平均每月利润率的大小;
(2)已知这6个月内没有发生某个月
,
两公司同时亏损的情况,则从这6个月中任意抽取2个月,求这2个月
,
两公司均盈利的概率.
公司 | |||
| 3 | 2 | 1 |
| 2 | 2 | 2 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a86bb6546a43e77769a59edccd3c3b16.png)
(1)比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)已知这6个月内没有发生某个月
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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解题方法
6 . 如图,在三棱锥
中,
分别为棱
的中点.
平面
;
(2)若点
到底面
的距离等于
,且
,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14bd33c6c97ae75127cf9ade58627c0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f0bb8127547d4978311d81d93244e23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448cbac9a1ef3de7538a6b30cdc39582.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aea58ce272b1b4b8a256e6f1f39b3964.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d3976d08e5f9e24e76ce9579c06a8dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4183602e71ff9a3fae892145082eaf.png)
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解题方法
7 . 已知抛物线
和
的焦点分别为
,动直线
与
交于
两点,与
交于
两点,其中
,且当
过点
时,
,则下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8494e9bb893fda58992bdb2aeac7b3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a4ac6fb4079a522ea7858254b598e0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d7d5b7a335fb30a034976287aee9e05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/985d2392abc6dbf02f4c6a19761d6b53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f4f301698695ab54cd2f643e935c52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6179bd1936944d2977cab330e0e351ca.png)
A.![]() ![]() |
B.已知点![]() ![]() |
C.![]() |
D.若![]() ![]() ![]() |
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2卷引用:陕西省安康市高新中学2024届高三模拟考试最后一卷理科数学试题
解题方法
8 . 已知实数
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21473d2e97f0819254f323459d567688.png)
______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c41bdcf8b1cca7789bae72964765349c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21473d2e97f0819254f323459d567688.png)
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9 . 已知
均为正数,且
.
(1)证明:
;
(2)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a14c388e1e2e5a2ff1ccf6caffbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bc6eea3c5d96a346933efc0ee8c7712.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edd48ad895a7341b3a82e32d3bc96ba9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa66c9933cb8a53806ddb579df5fed7.png)
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10 . 在直角坐标系
中,曲线
的参数方程为
(
为参数),以坐标原点为极点,
轴正半轴为极轴建立极坐标系,曲线
的极坐标方程为
.
(1)求
的普通方程和
的直角坐标方程;
(2)若曲线
分别与曲线
和
交于点
,其中
,若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f051cabd248937ab69fce64a390920.png)
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b26100f077f3d37a150999d8c6072451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8010d2041067206d639f353e406ab837.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0be6895a2972696747bad7e94faa1492.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dcbe8b4bcd32e5a64ebfd873f8cbb2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f051cabd248937ab69fce64a390920.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79e3b10e583d8c9072efa6764aff56bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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