解题方法
1 . 已知函数
,
,若对任意
.及对任意
,都有
,则实数a的值可以是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe5effb3053cf609f59178641cd48167.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bb1e7475dd989f4a692bfc8b206b107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7192c7ee3cec2f724ee10e3bd4d4002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0db7eb2d7545d055f1cb6e8a7b5e1dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6154e00013d9dee84c0e941f676ea9.png)
A.![]() | B.![]() | C.2 | D.3 |
您最近一年使用:0次
2023-08-13更新
|
1311次组卷
|
3卷引用:宁夏银川市永宁县上游高级中学2023-2024学年高一上学期期中检测数学试题
名校
解题方法
2 . 在平面直角坐标系
中,双曲线
的左、右焦点分别为
,
,点
是
左支上一点,且
,
,则C的渐近线方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2cfa22139b3e9c9a73500e1ba19f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/288060bacca802a86ff209ddfd412e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abe4dbf90ee7e3cab9177e53090f1e80.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 设
,
,
,
是4个正整数,从中任取
个数求和所得的集合为
,则这
个数中最小的数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365b38a7689a8eede6820cd6f1fe952b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13e9563fed3c907f7bdfd640c93251c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
A.4 | B.6 | C.8 | D.10 |
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解题方法
4 . 在平面直角坐标系
中,给出曲线
:
(
为参数),直线
:
,以
为极点,
轴的非负半轴为极轴建立极坐标系,给出曲线
:
.
(1)判断曲线
与
的位置关系;
(2)直线
与曲线
交于A,B两点,与曲线
交于C,D两点,若
,求
的值.
![](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/64f23bb05e586ec0a3d42bdf95399ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6a7108d77b8ad681a6b7573ecac0406.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/f93d9d8215fd7e1a5d5768b1ec426419.png)
(1)判断曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)直线
![](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/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f326ba56c0cf548dd31f029f8ab7c6c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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解题方法
5 . 已知在等差数列
中,
,等比数列
的公比
,且
,
.
(1)求
,
的通项公式;
(2)求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d9b6c86435e0ceff94d8ad1cd03737.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/769fe52ac96348d3b12d23d06d702595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e817b8be3b4c7a2aeeb5895a76db5eff.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec4bdc2a6d4fc387dc621f0b5a268c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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6 . 2023年“十一”长假期间,某商场的一些店铺纷纷加大了促销力度. 现随机抽取7家店铺,得到其广告促销支出
(单位:万元)与销售额
(单位:万元)数据如下:
(1)建立
关于
的一元线性回归方程(系数精确到0.01),并预测当促销支出为30万元时,销售额为多少万元;
(2)若将店铺的销售额
与促销支出
的比值称为该店铺的促销效率值
,当
时,称该店铺的促销手段为“金牌方案”,从这7家店铺中随机抽取4家,记这4家店铺中“金牌方案”的店铺数为X,求X的分布列与期望.
注:参考数据
,
,回归方程
中斜率和截距的最小二乘估计公式分别为
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
店铺 | A | B | C | D | E | F | G |
广告支出/万元 | 1 | 2 | 4 | 6 | 10 | 13 | 20 |
销售额/万元 | 19 | 32 | 44 | 40 | 52 | 53 | 54 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若将店铺的销售额
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1100379a4385b9ce064847bc21760adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de5edfa5a8d084eee75b0ec5068ee307.png)
注:参考数据
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7469434574414890f8bc3ee013e97a03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/155a474d5146ded6c3d03a828df89d6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cf74bbdee085c44778ac6191e5016b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44d85989c55526bf670af20a3dc77c3.png)
![](https://img.xkw.com/dksih/QBM/2023/11/24/3374996291641344/3376107051474944/STEM/1013a9f1b9e04c2886b2d09b4acf936c.png?resizew=71)
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解题方法
7 . 在三棱锥
中,
为
的中点,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef30c5bc0eef222cf57a9e4542e648ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adf69b83153f6ec578b83e09d688a877.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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8 . 已知曲线C的方程为
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88895a2663c11f82b2de3abcfb1ba4c3.png)
A.存在实数![]() ![]() |
B.若曲线C为椭圆,则![]() |
C.若曲线C为焦点在x轴上的双曲线,则![]() |
D.当曲线C是椭圆时,曲线C的焦距为定值 |
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2023-12-09更新
|
1101次组卷
|
5卷引用:宁夏银川市四校2023-2024学年高二上学期联考数学试卷
名校
解题方法
9 . “白日登山望烽火,黄昏饮马傍交河”是唐代诗人李颀《古从军行》这首诗的开头两句.诗中隐含着一个数学问题——“将军饮马”:将军在观望烽火之后从山脚下某处出发,先到河边饮马后再回军营,怎样走才能使总路程最短?在平面直角坐标系中,设军营所在区域为
,若将军从点
处出发,河岸线所在直线方程为
,并假定将军只要到达军营所在区域即认为回到军营,那么“将军饮马”的最短总路程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdd4278b70c472c579732ad52f6e2065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/438f2ecd2794aab310aaf3cb6f2263ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86d4e84765a90cf065a696a6af061c3b.png)
A.13 | B.11 | C.9 | D.7 |
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解题方法
10 . 已知函数
是定义在
上的奇函数,当
时,
.
(1)求函数
的解析式;
(2)若
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e99bebf8db0d314aacb2cb1f09bf48c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b2428921c82d2ace53ade031fa21fea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06bfbe1893a7dd49a288551377436e2c.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783e21159fcb9ea5f3f65b35ee0f9c5f.png)
您最近一年使用:0次
2023-12-08更新
|
769次组卷
|
9卷引用:宁夏银川市永宁县上游高级中学2023-2024学年高一上学期期中检测数学试题
宁夏银川市永宁县上游高级中学2023-2024学年高一上学期期中检测数学试题四川省成都市郫都区2023-2024学年高一上学期期中数学试题山西省太原市杏花岭区山西省实验中学2023-2024学年高一上学期期中数学试题福建省莆田市第八中学2023-2024学年高一上学期期中数学试题甘肃省兰州市西北中学2023-2024学年高一上学期期中数学试题(已下线)【第三练】3.2.2奇偶性(已下线)3.2.2奇偶性【第三练】“上好三节课,做好三套题“高中数学素养晋级之路(已下线)上海市华东师范大学第二附属中学2023-2024学年高一上学期12月月考数学试卷(已下线)专题05 利用函数的奇偶性求函数的解析式(期末大题3)-大题秒杀技巧及专项练习(人教A版2019必修第一册)