名校
1 . 已知函数
,点
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9786abfbeefde2c93403b85dca2a6fa.png)
都在曲线
上,且线段
与曲线
有五个公共点,则
的值是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e92ba55a985cf3de7d22e5489346e37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2de78b3148620cc740e52edb9a791c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9786abfbeefde2c93403b85dca2a6fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74e01f1b16d9449bd3756c1be78aee5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
A.4 | B.2 | C.![]() | D.![]() |
您最近一年使用:0次
2017-04-06更新
|
983次组卷
|
5卷引用:2017届北京市丰台区高三第二学期一模练习数学文科试卷
2 . 倡导全民阅读是传承文明、更新知识、提高民族素质的基本途径.某调查公司随机调查了1000位成年人一周的平均阅读时间(单位:小时),他们的阅读时间都在
内,将调查结果按如下方式分成五组:第一组
,第二组
,第三组
,第四组
,第五组
,并绘制了频率分布直方图,如图.假设每周平均阅读时间不少于12小时的人,称为“阅读达人”.
![](https://img.xkw.com/dksih/QBM/2016/3/4/1572518713155584/1572518718930944/STEM/11e224f744e44c8bbf3c6ae10c1a60f6.png)
(1)求这1000人中“阅读达人”的人数;
(2)从阅读时间为
的成年人中按分层抽样抽取9人做个性研究.从这9人中随机抽取2人,求这2人都不是“阅读达人”的概率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d86c23bb58b594500fe27fa6cc69ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c00228a305381ec169c29cd128e8e4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52034c0d2fc0a0ce00fae24dac8344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e92840ad19a5005358431f78f1b6c0d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c426ef138f673220c35529d42f9078c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/967afd1044964b3d50914edac23fd878.png)
![](https://img.xkw.com/dksih/QBM/2016/3/4/1572518713155584/1572518718930944/STEM/11e224f744e44c8bbf3c6ae10c1a60f6.png)
(1)求这1000人中“阅读达人”的人数;
(2)从阅读时间为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0603a924a790f236a6e28560fe28a8.png)
您最近一年使用:0次
解题方法
3 . 设函数
的图象与直线
相切于点
.
(1)求函数
的解析式;
(2)求函数
的单调区间;
(3)设函数
,对于![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49dac463bbb7375dbf8e2246f9a6f0d9.png)
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408c3726fe0b0698826dc623f269e179.png)
,使得
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/119ae23e328ddd6e802972c4d61d020f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b5650c367f8562532706a8d73d4c24c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7bd4e5049fa304e4d352bfe6dee455d.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/248250886281892ff54d0c1706b46aaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49dac463bbb7375dbf8e2246f9a6f0d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76a064e451fd1df875aaa5e7af32733b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408c3726fe0b0698826dc623f269e179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeb2d5ad3b7d96ce3c9ff2bac4959eec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29f5020d133f458912dc3da22b8127d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
4 . 如图,四棱锥
中,底面
是边长为 4的菱形,
,
,
为
中点.
![](https://img.xkw.com/dksih/QBM/2016/3/4/1572518713155584/1572518718963712/STEM/2d0a5c44c5294384ba697fd8c1b2494c.png?resizew=223)
(1)求证:
平面
;
(2)求证:平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65277734669566578cbb7d690bb200fb.png)
平面
;
(3)若
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f75cf0288e9b7c31a426aff6b91a5a8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b86db010859f7a243badec02946a4e24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/2016/3/4/1572518713155584/1572518718963712/STEM/2d0a5c44c5294384ba697fd8c1b2494c.png?resizew=223)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b70cef0b79ca64acbb67dc667fc53b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65277734669566578cbb7d690bb200fb.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65277734669566578cbb7d690bb200fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb96e0331eebe80ed1ff610faf531fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/578fc8dd7d45fd2799f7d05ac89a2024.png)
您最近一年使用:0次
2016-12-04更新
|
1422次组卷
|
2卷引用:2016届北京市丰台区高三上学期期末联考文科数学试卷
名校
5 . 已知点
为抛物线C:
的焦点,过点
的动直线
与抛物线C交于
,
两点,如图.当直线
与
轴垂直时,
.
![](https://img.xkw.com/dksih/QBM/2016/3/4/1572518713155584/1572518719037440/STEM/8542c232dee54b989b05e76a259d0515.png)
(1)求抛物线C的方程;
(2)已知点
,设直线PM的斜率为
,直线PN的斜率为
.请判断
是否为定值,若是,写出这个定值,并证明你的结论;若不是,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e38bd48c569e650474d63f1fb16125f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2625d0a8160479638a5c21b4f156c685.png)
![](https://img.xkw.com/dksih/QBM/2016/3/4/1572518713155584/1572518719037440/STEM/8542c232dee54b989b05e76a259d0515.png)
(1)求抛物线C的方程;
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2f7f821e9bd307002f782274e0b990b.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/b69e3f7ddd51215d00661c09cd900d60.png)
您最近一年使用:0次
2016-12-04更新
|
796次组卷
|
2卷引用:2016届北京市丰台区高三上学期期末联考文科数学试卷
解题方法
6 . 已知函数
.
(1)求函数
的极值;
(2)若存在实数
,且
,使得
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fd396c1a13422742aa4e375b26fcf31.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ad65acdb0dde43c53e1c2d87f8483b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/104fc51c29083aaac6067c64dafcec71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/801178c72106bf786bd1a951b35ef714.png)
您最近一年使用:0次
2016-12-04更新
|
753次组卷
|
3卷引用:2016届北京市丰台区高三上学期期末联考理科数学试卷
7 . 已知定点
和直线
上的动点
,线段MN的垂直平分线交直线
于点
,设点
的轨迹为曲线
.
(1)求曲线
的方程;
(2)直线
交
轴于点
,交曲线
于不同的两点
,点
关于x轴的对称点为点P.点
关于
轴的对称点为
,求证:A,P,Q三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c9dcfd9f4c5298035870cb88a34169.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff32df158dd2d590af5646657afb0101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/187ea704ace78fa4a8a7070574ac8bdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4ff39dd1dfc9caf911ad0d11ba21d66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d625dab2915558ab9cbad128d25389.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://img.xkw.com/dksih/QBM/2016/3/4/1572518468640768/1572518474604544/STEM/1d8a1ead36324ef0b817cb84e4aa085d.png)
您最近一年使用:0次
8 . 某市为了了解本市高中学生的汉字书写水平,在全市范围内随机抽取了近千名学生参加汉字听写考试,将所得数据整理后,绘制出频率分布直方图如图所示,其中样本数据分组区间为
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2015/3/31/1572052161847296/1572052167589888/STEM/aec76831c3e04a4db0ccfa168e4b1fd3.png)
(1)试估计全市学生参加汉字听写考试的平均成绩;
(2)如果从参加本次考试的同学中随机选取1名同学,求这名同学考试成绩在80分以上(含80分)的概率;
(3)如果从参加本次考试的同学中随机选取3名同学,这3名同学中考试成绩在80分以上(含80分)的人数记为
,求
的分布列及数学期望.
(注:频率可以视为相应的概率)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a142765f29499673b40e26ce4f1d36d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27b00644365909601ed84ff49813d5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e19eb06f4d72f09820825ccd49c31b72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328fcb58a789bd05648864910ede4d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ea74afcb17a3c5f6d00f21d6e2d50.png)
![](https://img.xkw.com/dksih/QBM/2015/3/31/1572052161847296/1572052167589888/STEM/aec76831c3e04a4db0ccfa168e4b1fd3.png)
(1)试估计全市学生参加汉字听写考试的平均成绩;
(2)如果从参加本次考试的同学中随机选取1名同学,求这名同学考试成绩在80分以上(含80分)的概率;
(3)如果从参加本次考试的同学中随机选取3名同学,这3名同学中考试成绩在80分以上(含80分)的人数记为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
(注:频率可以视为相应的概率)
您最近一年使用:0次
名校
9 . 已知椭圆
:
的右焦点
,点
在椭圆
上.
(1)求椭圆
的标准方程;
(2)直线
过点
,且与椭圆
交于
,
两点,过原点
作直线
的垂线,垂足为
,如果△
的面积为
(
为实数),求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ce176fdfbb44b8459f441a8d805013f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfd18169dc3fdfbbe4d6de6cb6271ddd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ab3b7ef2d71217a484d18f0f1876825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2016-12-03更新
|
876次组卷
|
3卷引用:2015届北京市丰台区高三上学期期末考试理科数学试卷
10 . 已知函数
,
.
(Ⅰ)求
的值;
(Ⅱ)求函数
在区间
上的最大值和最小值,及相应的x的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/938f77027e62580ea79d27703ebe6453.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571991218978816/1571991224803328/STEM/31567aa66776412682d56f3c04427847.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e50cb539fe045a8cb5ffccb3460334bd.png)
(Ⅱ)求函数
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571991218978816/1571991224803328/STEM/11269cdb1b4942559a3ebacea2e32ad9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e413e222e4c761095d573dd6c9066299.png)
您最近一年使用:0次