1 . 据国家气象局消息,今年各地均出现了极端高温天气.漫漫暑期,某制冷杯成了畅销商品.该制冷杯根据物体的降温遵循牛顿冷却定律,即如果某液体的初始温度为
(单位:
),那么经过
分钟后,温度
满足
,其中
为室温,
为参数.为模拟观察制冷杯的降温效果,小明把一杯
的茶水放在
的房间,10分钟后茶水降温至
.(参考数据:
)
(1)若欲将这杯茶水继续降温至
,大约还需要多少分钟?(保留整数)
(2)某企业生产制冷杯每月的成本
(单位:万元)由两部分构成:①固定成本(与生产产品的数量无关):20万元;②生产所需材料成本:
万元,
(单位:万套)为每月生产产品的套数.
(i)该企业每月产量
为何值时,平均每万套的成本最低?一万套的最低成本为多少?
(ii)若每月生产
万套产品,每万套售价为:
万元,假设每套产品都能够售出,则该企业应如何制定计划,才能确保该制冷杯每月的利润不低于520万元?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/635ccd929471d564cc9d2d96266b34d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b077f397f54943d2af4334c7bde3b24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b6ed09df3e10d1faa908fb2575948d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212baa7c3eed6574b6edae95538a7765.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/849ca1e01ff86bdd86ddd4693da05100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b1ea1c0b768f231430b1ae0836a4e66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/792f0e34cb59fe2c95c90d6b222b9eac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/694613e148bb635b86e6a67bc755cdf3.png)
(1)若欲将这杯茶水继续降温至
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9576b00e0cc6c2fe9e5bcc968d03ddd9.png)
(2)某企业生产制冷杯每月的成本
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28dd92afccd2f416506b4f6e9778339b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(i)该企业每月产量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(ii)若每月生产
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d85821770d0b407feb4ae43a75971b24.png)
您最近一年使用:0次
2024-01-06更新
|
202次组卷
|
2卷引用:山西省部分学校2023-2024学年高一上学期期末数学试题
解题方法
2 . 对于数列
,若存在
,使得对任意
,总有
,则称
为“有界变差数列”.
(1)若各项均为正数的等比数列
为有界变差数列,求其公比q的取值范围;
(2)若数列
满足
,且
,证明:
是有界变差数列;
(3)若
,
均为有界变差数列,且
,证明:
是有界变差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2480f87a11c4cd450bc9454ea7276722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b12bed9580c9e3efaaae3f234780cef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(1)若各项均为正数的等比数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b22febb1e578366695d7628740370bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/385275d29d8c8a7841eaeaa3dfab2cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1165edc23b5782b5942ef7e79130bb94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7c13436fc942bddb9c562520fb855a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc883e0a2ee951e94f305c807e66010a.png)
您最近一年使用:0次
3 . 已知函数
.
(1)当
时,求
在点
处的切线方程;
(2)若函数
在区间
内单调递减,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e8e33c25830fd5d1f0e2eba8627128.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
您最近一年使用:0次
解题方法
4 . 已知直线
,点
.求:
(1)点
关于直线
的对称点
的坐标;
(2)直线
关于直线
的对称直线
的方程;
(3)直线
关于点
对称的直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9add48091111ef2f7493b72f15cf9d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f877f49ebcca3dc632948ef6a7ea7ea8.png)
(1)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4247fd2a19d8f827d574a3aacfe9bc2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7093538ecfb10a639b23863e7331a66d.png)
(3)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f877f49ebcca3dc632948ef6a7ea7ea8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dea1bd3d0dd84b8b6f6ff634c5600c.png)
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5 . 如图,
是以
为直径的圆
上的点,
平面
分别是线段
上的点,且满足
,
.
;
(2)若二面角
的正弦值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42ab05980824d7403b26cc3d3aa5436f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a4219a42f8fd44eff9e7b854e0cf424.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/856c44987756c43ca900b4ec6115b498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e41916523511064a97de39b0f2b323.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1e52b5625cff6fc8c5e150dd02a6e4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
6 . 已知函数
,
.
(1)若
,
,讨论
在区间
上的单调性;
(2)设t为常数,若
”’是“
在
上具有单调性”的充分条件,求t的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ed85f17995b7ee1ebaa9e99dd0faf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8ec0ccdb6db6fbaeb1172e281ec22f.png)
(2)设t为常数,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/130a596bd3dd37a00564ac3bbe34683e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
您最近一年使用:0次
解题方法
7 . 某学校准备订做新的校服,有正装和运动装两种风格可供选择,为了解学生和家长们的偏好,学校随机调查了200名学生及每名学生的一位家长,得到以下的
列联表:
(1)根据以上数据,判断是否有
的把握认为学生与家长对校服风格的偏好有差异;
(2)若从家长中按不同偏好的人数比例用分层随机抽样的方法抽取5人进行座谈,再从这5人中任选2人,记这2人中更喜欢正装的家长人数为X,求X的分布列和数学期望.
附:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b72fcdc709e77910cd36a26369648b3.png)
更喜欢正装 | 更喜欢运动装 | |
家长 | 120 | 80 |
学生 | 160 | 40 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe157a9c3fe004a25bf1fb79c8c0a1b.png)
(2)若从家长中按不同偏好的人数比例用分层随机抽样的方法抽取5人进行座谈,再从这5人中任选2人,记这2人中更喜欢正装的家长人数为X,求X的分布列和数学期望.
附:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dc70b5e1ba847b9918a50f67bfbe8f.png)
0.1 | 0.05 | 0.01 | 0.001 | |
2.706 | 3.841 | 6.635 | 10.828 |
您最近一年使用:0次
解题方法
8 . 若
,求:
(1)
;
(2)
;
(3)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/151645d1eea44a081efb895a8fe4dc78.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235474ba971bf99eefacced8f794e342.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6a766e037468d9c6e4bade3de283ae8.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/476542265d87a5247eac58929bf9bee2.png)
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9 . 计算
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca88a71892959053c05b2e81d13339fc.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f9a8131d11d72de3d2ef17960871cba.png)
您最近一年使用:0次
解题方法
10 . 6名男生和4名女生站成一排,求满足下列条件的排法共有多少种.
(1)任何2名女生都不相邻;
(2)男生甲不在首位,男生乙不在末位;
(3)男生甲、乙、丙排序一定;
(4)男生甲在男生乙的左边(不一定相邻).
(1)任何2名女生都不相邻;
(2)男生甲不在首位,男生乙不在末位;
(3)男生甲、乙、丙排序一定;
(4)男生甲在男生乙的左边(不一定相邻).
您最近一年使用:0次