1 . 在平面直角坐标系
中,已知抛物线
:
的焦点为
,点
,
为
上异于
不同两点,故
,
的斜率分别为
,
,
是
的准线与
轴的交点.若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b072ff6d1b83232bebd7d4709ffba4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/771a2abef658aab00d81a85ac26d9128.png)
A.以![]() ![]() | B.存在![]() ![]() ![]() |
C.![]() ![]() | D.![]() |
您最近一年使用:0次
解题方法
2 . 2020年7月23日,“天问一号”在中国文昌航天发射场发射升空,经过多次变轨后于2021年5月15日头现软着陆火星表面.如图,在同一平面内,火星轮廓近似看成以
为圆心、
为半径的圆,轨道Ⅰ是以
为圆心、
为半径的圆,着陆器从轨道Ⅰ的
点变轨,进入椭圆形轨道Ⅱ后在
点着陆.已知直线
经过
,
,与圆
交于另一点
,与圆
交于另一点
,若
恰为椭圆形轨道Ⅱ的上焦点,且
,
,则椭圆形轨道Ⅱ的离心率为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/14/9dea45e8-7170-485a-b05b-7a8bcb4e9ea2.png?resizew=160)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efc18a5bb2e53586331b2a58538a48b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f20f21a9d50b61dac519a3ddab539d.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff11165322ac507fbc24e5ae53217081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71de7c0bdb3cb6608b3a37d668bf0823.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/14/9dea45e8-7170-485a-b05b-7a8bcb4e9ea2.png?resizew=160)
A.![]() | B.![]() | C.![]() | D.![]() |
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3 . 如图,在平面直角坐标系
中,已知函数
的图象为曲线
,点
在
上,点
在
轴上,且
分别是以
为直角顶点的等腰直角三角形.记点
的横坐标分别为
,
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/4/63b37273-c9ae-4227-87a1-1f6fbccbe7d5.png?resizew=168)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edeed0665fc1a8e99ceb7911fe137390.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f36925a6e79016bbbf8c9cd77c3204e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ee76826aa0f752c670dec0b6e2c21f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fd7c9e9e534c62a758262894611823d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f36925a6e79016bbbf8c9cd77c3204e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93598e7e1512f621ce42ae2632d744c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a272adba0f1120109824440f0e252c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/242922097b33a636ca6210765ebca24e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/4/63b37273-c9ae-4227-87a1-1f6fbccbe7d5.png?resizew=168)
A.![]() | B.![]() |
C.![]() | D.![]() |
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4 . 在平面直角坐标系
中,已知菱形
的边长为2,一个内角为60°,顶点
,
,
,
均在坐标轴上,以
为焦点的椭圆
经过
,
两点,请写出一个这样的
的标准方程:______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098a3e7d1f1890863b7483a98b618119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
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解题方法
5 . 2023年9月28日,沪宁沿江高速铁路开通运营,形成上海至南京间的第二条城际高速铁路,沪宁沿江高速铁路共设8座车站(如图).为体验高铁速度,游览各地风光,甲乙两人准备同时从南京南站出发,甲随机选择金坛、武进、江阴、张家港中的一站下车,乙随机选择金坛、武进、江阴、张家港、常熟中的一站下车.已知两人不在同一站下车,则甲比乙晚下车的概率为( )
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
6 . 某数学兴趣小组为研究指数函数的“爆炸性增长”进行了折纸活动.一张纸每对折一次,纸张变成两层,纸张厚度会翻一倍.现假定对一张足够大的纸张(其厚度等同于0.0766毫米的胶版纸)进行无限次的对折.借助计算工具进行运算,整理记录了其中的三次数据如下:
已知地球到月亮的距离约为38万公里,问理论上至少对折( )次,纸张的厚度会超过地球到月亮的距离.
折纸次数 | 纸张厚度 | 参照物 |
22 | 321米 | 苏州东方之门的高度约为301.8米 |
27 | 10281米 | 珠穆朗玛峰的高度约为8844米 |
38 | 2.1万公里 | 地球直径约为1.3万公里 |
A.41 | B.43 | C.45 | D.47 |
您最近一年使用:0次
7 . 在平面直角坐标系
中,点
,
的坐标分别为
和
,设
的面积为
,内切圆半径为
,当
时,记顶点
的轨迹为曲线
.
(1)求
的方程;
(2)已知点
,
,
,
在
上,且直线
与
相交于点
,记
,
的斜率分别为
,
.
(i) 设
的中点为
,
的中点为
,证明:存在唯一常数
,使得当
时,
;
(ii) 若
,当
最大时,求四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](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/ab1242ec96ac54e2fd418988d5190a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953bfeb398bab2b2ba61b3e6bf0a22e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a5e0a51c9e14fb246b0ba0b231c1e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b722e2e83c2d125453ee2d80a5e64d26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知点
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
(i) 设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f132407bf1cc9d1f460d50f1b0547993.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b3fa41635da8da11d6c04287ff7513.png)
(ii) 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/129fa211eb0cfb3968d38c3c90249842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb13513559d5e8595656b898584dcdd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcad0585886e2d7bac28a0e292a1d37.png)
您最近一年使用:0次
2024-01-02更新
|
1177次组卷
|
5卷引用:江苏省苏州市相城区南京师大苏州实验学校2024届高三上学期期末模拟数学试题
名校
解题方法
8 . 某公司为激励员工,在年会活动中,该公司的
位员工通过摸球游戏抽奖,其游戏规则为:每位员工前面都有1个暗盒,第1个暗盒里有3个红球与1个白球.其余暗盒里都恰有2个红球与1个白球,这些球的形状大小都完全相同.第1位员工从第1个暗盒里取出1个球,并将这个球放入第2个暗盒里,第2位员工再从第2个暗盒里面取出1个球并放入第3个暗盒里,依次类推,第
位员工再从第
个暗盒里面取出1个球并放入第
个暗盒里.第
位员工从第
个暗盒中取出1个球,游戏结束.若某员工取出的球为红球,则该员工获得奖金1000元,否则该员工获得奖金500元.设第
位员工获得奖金为
元.
(1)求
的概率;
(2)求
的数学期望
,并指出第几位员工获得奖金额的数学期望最大.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8715a3f984d2627afd7c40c61347b7cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aadf9ab510510120699c5eee39ab18b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aadf9ab510510120699c5eee39ab18b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ed315453447a26d9d8bf99b938d7fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f95e54a9b7c66c97dc6ee6161a25c0e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f16c0cd993ab0dbe564051f78c340128.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f95e54a9b7c66c97dc6ee6161a25c0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56b678dec65a0ca8006cc6828d8cb501.png)
您最近一年使用:0次
2023-12-31更新
|
1833次组卷
|
7卷引用:江苏省苏州市相城区南京师大苏州实验学校2024届高三上学期期末模拟数学试题
9 . 已知定义在
上的函数
从x到
的平均变化率为
,则
的单调增区间是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8620af3c7a01ebc1dbab875c3c7ec50e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c22aef0a3bed7aad1c80c7cc8eabd0fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 为全面贯彻党的教育方针,落实立德树人的根本任务,着力造就拔尖创新人才,某校为数学兴趣小组购买了一些数学特色专著:《数学的意义》《现代世界中的数学》《数学问题》,其数量分别为x,y,z(单位:本).现了解到:①
;②
,则这些数学专著至少有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fec95e04166716025e91d469f2ca8f17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90dceee276d42b0d7e9ae31a57da4f99.png)
A.9本 | B.10本 | C.11本 | D.12本 |
您最近一年使用:0次