1 . 已知直线y=k(x﹣1)与抛物线C:y2=4x交于A,B两点,直线y=2k(x﹣2)与抛物线D:y2=8x交于M,N两点,设λ=|AB|﹣2|MN|,则( )
A.λ<﹣16 | B.λ=﹣16 | C.﹣12<λ<0 | D.λ=﹣12 |
您最近一年使用:0次
2020-03-10更新
|
806次组卷
|
13卷引用:2020届河南省高三上学年期末数学(文科)试题
2020届河南省高三上学年期末数学(文科)试题2020届河南省高三上学期末数学理科试题2020届河南省高三3月联合检测数学(文科)试题2020届河南省高三3月联合检测数学(理科)试题河北省2019-2020学年高三下学期3月联合考试数学(理)试题2020届河南省驻马店市高三第二次模拟测试数学(理科)试题2020届河南省驻马店市高三第二次模拟测试数学(文科)试题2020届江西省九江市十校高三下学期模拟考试数学(理)试题江西省九江市十校2019-2020学年高三模拟考试数学(文)试题陕西省汉中市重点中学2019-2020学年高三下学期4月开学第一次联考数学(文)试题(已下线)第三篇抛物线03-2020年高考数学选填题专项测试(文理通用)吉林省通钢一中、集安一中、梅河口五中等省示范高中2020届高三(5月份)高考数学(文科)模拟试题2020届辽宁省辽阳市高三一模考试数学(文)试题
名校
2 . 已知动圆
的圆心
在抛物线
上,且圆
与直线
相切,则圆
与圆
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b4f86e48e2b0d63c1865c60ed1e4d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3577bf250e9110428ff34f518fbd9f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76426b7e71f15f6e801b00d1f72b1030.png)
A.总是相离 | B.总是外切 |
C.一定有两个不同的公共点 | D.可以有公共点,也可以没有公共点 |
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3 . 在平面直角坐标系
中,直线
与x、y轴分别交于点
、
,记以点
为圆心,半径为r的圆与三角形
的边的交点个数为M.对于下列说法:①当
时,若
,则
;②当
时,若
,则
;③当
时,M不可能等于3;④M的值可以为0,1,2,3,4,5.其中正确的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500bcca9002bb8fda67a603bb8e82be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02da6ba71553e3fb605f60bfc040412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55cec51e3269da8850f98121dc10d31d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa6e3afb5196decc6f087cbfe40cf8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c45176df950dfe48b8ca7eac08ee349.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa6f831315a34703f535c17e93b6bcc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f7334fa07adfc564defcf72da9e037.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19cf6bff0e909bfe894d0a618b3bb9bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d71b28f2d6b07c5323a10c5195a49e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd4c63ae1fc87e1892f88e181ddadf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff54772b0e34f50f1a20d0525d7c0dc9.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
19-20高二·浙江·期末
解题方法
4 . 把椭圆
的短轴和焦点连线段中较长者、较短者分别作为椭圆
的长轴、短轴,使椭圆
变换成椭圆
,称之为椭圆的一次“压缩”.按上述定义把椭圆
“压缩”成椭圆
,得到一系列椭圆
,…当短轴长与焦距相等时终止“压缩”.经研究发现,某个椭圆
经过
次“压缩”后能终止,则椭圆
的离心率可能是①
,②
,③
,④
中的______ .(填写所有正确结论的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b227b38b45b5fce63a6bdad8adf113.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b227b38b45b5fce63a6bdad8adf113.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6decaa352376a0689dffd773283fd1cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fde27c3cfe9b3e23077120ab684efd68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a809ca7fdd64561639655b464bdbc1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9a7e0e5238148676a584b1748e04d3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ae0b861522b18be1753acc4474cbc9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/607956aa6e6421c2a37570546887eec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64e76a4c1e5934f51cdca2ffbc8313f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
您最近一年使用:0次
名校
5 . 记
实数
中较小的数,函数
的定义域都是R,则“
都是偶函数”是“函数
为偶函数”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bcf98ae4aff5b41b9356ee67ad9f562.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8fd1e808e015f4cb43d2e3a0529ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8fd1e808e015f4cb43d2e3a0529ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00f2e06bc5b1b22c6ed58eb39fdb9714.png)
A.充分非必要条件 | B.必要非充分条件 |
C.充要条件 | D.既非充分也非必要条件 |
您最近一年使用:0次
2020-03-06更新
|
411次组卷
|
4卷引用:上海市七宝中学2020届高三上学期11月月考数学试题
上海市七宝中学2020届高三上学期11月月考数学试题上海市建平中学2022届高三下学期期中数学试题(已下线)专题02 函数的概念与性质必考题型分类训练-2上海市曹杨第二中学2023届高三上学期10月月考数学试题
19-20高二·浙江·期末
解题方法
6 . 从一块短轴长为
的椭圆中划出一块面积最大的矩形,若该矩形的面积是
,则椭圆离心率
为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18436f0e2391b0ab7537a566fc28204c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/457c50ab68909712412a30cd19d7c01e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
您最近一年使用:0次
19-20高二·浙江·期末
名校
解题方法
7 . 设
是椭圆
的左、右焦点,
是椭圆上的一点且满足三角形
的面积是12,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2350d5ee4fabb394b8584389c20a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd5a8e1bc9748e5519dcd9981b7eb251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/983f43cbde7233a6525bd8406fdd1835.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
8 . 如图,已知圆
,过点
的直线
交圆
于
两点.
![](https://img.xkw.com/dksih/QBM/2020/3/5/2412975487066112/2413026923134976/STEM/a75452731fd049a798326b6be287de36.png?resizew=256)
(1)设直线
斜率为1,求弦长
;
(2)若以
,
为邻边,作菱形
,求点
的轨迹方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79382ba44ba669b5d43fdd5427adf16c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9b5e076078240e0c5ad9763a9824d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://img.xkw.com/dksih/QBM/2020/3/5/2412975487066112/2413026923134976/STEM/a75452731fd049a798326b6be287de36.png?resizew=256)
(1)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaff41080fdea43eea7efedf9ebc1498.png)
(2)若以
![](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/3ea16ceca816f7d3d50650af141baf42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
19-20高二·浙江·期末
名校
解题方法
9 . 已知
、
是椭圆和双曲线的公共焦点,
是它们的一个公共交点,且
,则椭圆和双曲线的离心率倒数之和的最大值为
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db634c178cd7bffbd4cb886e3f2cca22.png)
A.![]() | B.![]() | C.2 | D.![]() |
您最近一年使用:0次
2020-03-05更新
|
2272次组卷
|
8卷引用:【新东方】新东方高二数学试卷305
(已下线)【新东方】新东方高二数学试卷305河北省衡水中学2021届高三上学期四调数学(理)试题安徽省六安市舒城中学2021届高三下学期仿真模拟(二)理科数学试题湖北省武汉市汉阳一中2021届高三下学期三模数学试题(已下线)专题04 圆锥曲线(难点)-2020-2021学年高二数学下学期期末专项复习(北师大版2019选择性必修第一册、第二册)(已下线)考点突破13 圆锥曲线的方程-备战2022年高考数学一轮复习培优提升精炼(新高考地区专用)河南省重点高中2021-2022学年高三下学期阶段性调研联考二理科数学试题(已下线)期末重难点突破专题02-【尖子生专用】2021-2022学年高二数学考点培优训练(人教A版2019选择性必修第一册)
10 . 已知抛物线
:
的焦点为
,准线为直线
,
、
、
三点均在抛物线
上且
过点
,
过点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/18248098-bbe3-4657-842c-a9e6757f6ea1.png?resizew=175)
(1)写出点
的坐标和直线
的方程;
(2)记
,
的面积分别为
,
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.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/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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78e0b4cce429003557b051ea0fa2f7de.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/1/18248098-bbe3-4657-842c-a9e6757f6ea1.png?resizew=175)
(1)写出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754b21397a7447766e490199d3afd6a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/884d40a97fd767e95f34f3b91ab8d84c.png)
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