1 . 已知O为坐标原点,经过点
的直线l与抛物线C:
交于A,B(A,B异于点O)两点,且以AB为直径的圆过点O.
(1)求C的方程;
(2)已知M,N,P是C上的三点,若△MNP为正三角形,Q为△MNP的中心,求直线OQ斜率的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ed24bfcc37b79fe9ca61ed8fdf26ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
(1)求C的方程;
(2)已知M,N,P是C上的三点,若△MNP为正三角形,Q为△MNP的中心,求直线OQ斜率的最大值.
您最近一年使用:0次
名校
2 . 如图.在四棱锥P-ABCD中.
平面
.底面ABCD为菱形.E.F分别为AB.PD的中点.
平面
;
(2)若
,
,
,求直线CD与平面EFC所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d4746df85049d1651d3f6c30212a7a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a431e58e5d7ecc4b73ae7acdaea250fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c383691e8d740830a865b12d66f7633.png)
您最近一年使用:0次
名校
解题方法
3 . 手中有
把钥匙,其中有
把能打开房门,每次随机选取一把试验,试验完后就分开放在一边.
(1)求第二次才能打开房门的概率;
(2)为了甄别出能打开房门的三把钥匙,需要试验X次,求X的分布列及数学期望
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
(1)求第二次才能打开房门的概率;
(2)为了甄别出能打开房门的三把钥匙,需要试验X次,求X的分布列及数学期望
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf3baba074e8aeb6f3ea117865bbd1b.png)
您最近一年使用:0次
4 . 已知F是抛物线C:
(
)的焦点,过点F作斜率为k的直线交C于M,N两点,且
.
(1)求C的标准方程;
(2)若P为C上一点(与点M位于y轴的同侧),直线
与直线
的斜率之和为0,
的面积为4,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b35f0b940c8422ef47edc3b7ce55e47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd313d4e92a762fb7fb0c1cb65263d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89b0a3f78892531a3f54f6a3fe21d801.png)
(1)求C的标准方程;
(2)若P为C上一点(与点M位于y轴的同侧),直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c2293f93791a597bf0162411f3395f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32189735ecb8eb1e6d27c80690f7501e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/438f34bc8b04e8c494b91306ac6fe352.png)
您最近一年使用:0次
2024-01-10更新
|
902次组卷
|
3卷引用:2024届河南省名校学术联盟高考模拟信息卷&押题卷数学(三)
2024高三·全国·专题练习
名校
5 . 如图,平行六面体
的底面
是菱形,且
.试用尽可能多的方法解决以下两问:
(1)若
,记面
为
,面
为
,求二面角
的平面角的余弦值;
(2)当
的值为多少时,能使
平面
?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7306debff951565a176d97e172c7d423.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/11/50dfddf9-9d22-43b2-b8a5-40cf209fa089.png?resizew=166)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eacb53e1a7a5b0db750bb7173d7587e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a935b7d21a103a264b6e96ecf82dbe4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d03d8e17ae48da37a4abe67c4600dee8.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71ed370ce5a3c8c8a8f76225cc9a5df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26d8a9d64ad3c8cba28840b41ed7837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73845d4d663b3de0b281611fe2c762fe.png)
您最近一年使用:0次
2024-01-07更新
|
1640次组卷
|
5卷引用:江西省赣州市南康中学2024届高三上学期七省联考考前数学猜题卷(九)
江西省赣州市南康中学2024届高三上学期七省联考考前数学猜题卷(九)(已下线)专题05 策略开放型【练】【通用版】(已下线)第15讲 8.6.3平面与平面垂直(第2课时)-【帮课堂】(人教A版2019必修第二册)(已下线)第八章 立体几何初步(二)(知识归纳+题型突破)(2)-单元速记·巧练(人教A版2019必修第二册)(已下线)第五章 破解立体几何开放探究问题 专题一 立体几何存在性问题 微点1 立体几何存在性问题的解法【培优版】
2024·全国·模拟预测
名校
6 . 已知椭圆
,直线
过
的左顶点与上顶点,且
与两坐标轴围成的三角形的面积为1.
(1)求椭圆
的标准方程;
(2)已知点
,
(异于点
)是椭圆
上不同的两点,且
,过
作
的垂线,垂足为
,求
到直线
的距离的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f5a1b728f09252ab59c246344267de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c7ecb124fbef5522f7b65665578f0af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83640592853a53872d7af69c0cffc1bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
7 . 已知椭圆
的离心率为
,且左顶点A与上顶点B的距离
.
(1)求椭圆
的标准方程;
(2)不经过坐标原点
的直线
交椭圆
于P,Q两点
两点不与椭圆上、下顶点重合),当
的面积最大时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f23420529a6a808d22d454e87a6194.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)不经过坐标原点
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/030d5205aabb757fb29e03704b4b26b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1f0417d8269f01d8e0bc1a8756e2ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee89f7d493efc00cd703af6bc73f9ea9.png)
您最近一年使用:0次
2024-01-06更新
|
1701次组卷
|
5卷引用:湖北省十一校2024届高三联考考后提升数学模拟训练一
2024·全国·模拟预测
8 . 已知函数
.
(1)当
时,求不等式
的解集;
(2)若不等式
恒成立,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16453fd0c704c077d17396091f06123d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369100ccd44feaa77e5f119ea949a879.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed9bb1f21b49cb88bc00fbfbe3ac404.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
9 . 设
分别为椭圆
: 的左、右焦点,
是椭圆
短轴的一个顶点,已知
的面积为
.
的方程;
(2)如图,
是椭圆上不重合的三点,原点
是
的重心
(i)当直线
垂直于
轴时,求点
到直线
的距离;
(ii)求点
到直线
的距离的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f98254a6193566587a70c7d95fdabf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3324199c6751f2e0e6d8542783b0d957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da0845f3d3d2c4614d12f85daa10185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)如图,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65936464323cbc99ae3c43adafba4bc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c4ee479000026b54146a5c6097dd6f4.png)
(i)当直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4a63d14654c66cc71bf26293d698ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4a63d14654c66cc71bf26293d698ec.png)
(ii)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4a63d14654c66cc71bf26293d698ec.png)
您最近一年使用:0次
名校
解题方法
10 . 已知数列
的前
顶和为
.且
.
(1)求数列
的通项公式;
(2)在数列
中,
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29979f5524c288432fa4d86e43df4d85.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)在数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea283ff39325e1fd63dbea5a88c317ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
2023-12-18更新
|
4086次组卷
|
9卷引用:四川省自贡市2024届高三一模数学(文)试题
四川省自贡市2024届高三一模数学(文)试题四川省自贡市2024届高三一模数学(理)试题(已下线)第三套 艺体生新高考全真模拟 (一模重组卷)山东省烟台市爱华高级中学2023-2024学年高二上学期期末模拟数学试题(二)A卷云南省昆明市第三中学2023-2024学年高二下学期第一次综合测试数学试卷(已下线)第四章 数列(单元测试)-2023-2024学年高二数学同步精品课堂(人教A版2019选择性必修第二册)(已下线)专题09 数列的通项公式、数列求和及综合应用(练习)-2广西百色市平果市铝城中学2023-2024学年高二下学期4月月考测试数学试卷广东省深圳市翠园中学2023-2024学年高二年级下学期5.12数学考试