1 . 已知点
,动点M满足
,动点
的轨迹记为
.
(1)求
的方程;
(2)若不垂直于
轴的直线
过点
,与
交于
两点(点
在
轴的上方),
分别为
在
轴上的左、右顶点,设直线
的斜率为
,直线
的斜率为
,试问
是否为定值?若是,求出该定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db796822debda1127de88f1f7583af75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eed5b1b5a80e66f5a6cd08be019376c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76b5ebfc6a82f19cea0fd940017acf7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d617aaa770c4e05893a1e4458f43d3bd.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)若不垂直于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa69fd8445d01c98634c2e885b47d5a.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/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252ef4f3003d233ce2467fec89315618.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32f1d6db99180ae7ee8af66f423dded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67351fe10fcfc3f9072eec4c60bfaaa5.png)
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7卷引用:贵州省黔东南苗族侗族自治州2024届高三12月统测(一模)数学试题
贵州省黔东南苗族侗族自治州2024届高三12月统测(一模)数学试题陕西省商洛市2024届高三一模数学(理)试题陕西省西安市部分学校2024届高三上学期12月联考数学(文)试题陕西省西安市长安区教育片区2024届高三上学期模拟考试数学(理)试题陕西省西安市长安区教育片区2024届高三上学期模拟考试数学(文)试题(已下线)2024年高考数学全真模拟卷05(新题型地区专用)(已下线)专题18 圆锥曲线高频压轴解答题(16大核心考点)(讲义)-1
2 . 如图,在三棱锥
中,平面
平面
,
,
,
,D,E分别为
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/24/79673101-f9de-40e0-b842-2edef77a5145.png?resizew=163)
(1)证明:平面
平面
.
(2)求平面
与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65f9a5dbf921cb11e9e0cdfa25b222aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/24/79673101-f9de-40e0-b842-2edef77a5145.png?resizew=163)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39282bdf319f30d7bc261e2e3ab3b1e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
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5卷引用:贵州省黔东南苗族侗族自治州2024届高三12月统测(一模)数学试题
3 . 已知
为等比数列
的前
项和,
,且
,
.
(1)若
为等差数列,求数列
的通项公式;
(2)若
为等比数列,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80024fe424904c9dcd25e36b0ae044c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/566ddc797ad2d310d4cc3102302951e9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ee9273cc82d57d99a21fb9c4953d46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ee9273cc82d57d99a21fb9c4953d46.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ee9273cc82d57d99a21fb9c4953d46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f212355b95afc30cea72b4af7536912.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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|
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4卷引用:贵州省黔东南苗族侗族自治州2024届高三12月统测(一模)数学试题
解题方法
4 .
的内角
所对的边分别为
,且
,
(1)求角
;
(2)若
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4726b8344a212b9b87845b58babf32c.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee02b034fe7987a4e67778d147e5992c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e50a42970b50d9dc1fd7e71c1df0b4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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|
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6卷引用:贵州省黔东南苗族侗族自治州2024届高三12月统测(一模)数学试题
贵州省黔东南苗族侗族自治州2024届高三12月统测(一模)数学试题海南省2024届高三上学期一轮复习调研考试(12月联考)数学试题(已下线)每日一题 第9题 它山之石 可攻最值(高三)山东省潍坊市安丘市青云学府2024届高三上学期期末适应性考试数学试题(已下线)模块5 周期变化篇 第5讲:三角形中的最值范围问题【讲】(已下线)考点17 解三角形中的最值问题 --2024届高考数学考点总动员【练】
名校
解题方法
5 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a296c144fc9626f81ae59d6dc1d6a80.png)
的图像;
(2)求
;
(3)求方程
的解集,并说明当整数
在何范围时,
.有且仅有一解.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a296c144fc9626f81ae59d6dc1d6a80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/981db5e1425f4510580273488f6e1fd0.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/549f9c4a708ba21ecadd712e2df626a4.png)
(3)求方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b7bff9b2431134f7683a9cc4e68acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb291880ef86317d079c0e0b349403e5.png)
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2023-12-09更新
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6卷引用:贵州省黔东南苗族侗族自治州锦屏中学2023-2024学年高一上学期期中考试数学试题
6 . 在正项等差数列
中,
,
.
(1)求数列
的通项公式;
(2)记
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6dd3ced080282d295aa343387cdca52.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216876de04325fd250c38c485cbc34b7.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/08eb71ecf8d733b6932f4680874dbbf3.png)
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2023-11-25更新
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6卷引用:贵州省黔东南州九校2024届高三上学期11月月考数学试题
贵州省黔东南州九校2024届高三上学期11月月考数学试题河南省周口市项城市5校2024届高三上学期11月联考数学试题河北省保定市唐县第一中学2024届高三上学期期中数学试题河南省金科新未来2023-2024学年高三上学期11月联考数学试题(已下线)第四章 数列(知识归纳+题型突破)-2023-2024学年高二数学单元速记·巧练(人教A版2019选择性必修第二册)陕西省榆林市神木市第四中学2023-2024学年高二下学期开学检测考试数学试题
名校
解题方法
7 . 在
中,内角A,B,C所对的边分别为
,
,
,且
.
(1)求A;
(2)若
为边
上一点,
,
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058e9a92b77a1fb1452286c28215eb46.png)
(1)求A;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50196d293a863fe2f9e46199052ab8c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e32513c66bca1e2d1706d50a6615df1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
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6卷引用:贵州省黔东南州九校2024届高三上学期11月月考数学试题
名校
8 . 某学校现有1000名学生,为调查该校学生一周使用手机上网时间的情况,收集了
名学生某周使用手机上网时间的样本数据(单位:小时).将数据分为6组:
,
,
,
,
,
,并整理得到如下的频率分布直方图:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/17/cd1a38c9-4366-4d17-a9c4-a92f6251fd80.jpg?resizew=218)
(1)估计该校学生一周平均使用手机上网时间(每组数据以该组中点值为代表);
(2)将一周使用手机上网时间在
内定义为“长时间使用手机上网”;一周使用手机上网时间在
内定义为“不长时间使用手机上网”,在样本数据中,有
名学生不近视,请补充完成该周使用手机上网时间与近视程度的列联表.若
为100,那么在犯错误概率不超过0.001的前提下是否能认为该校学生一周使用手机上网时间与近视程度有关”?
附:
,其中,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c2cc4cd1e8bcb4b75b6e799156736e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83a398ed06484652d88e8a0829eab79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d40d44bcc2610782af31da21296ec4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9fb81d8b5f8f2223d4b7620c8f9ee2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68feae4c38b4ba68f1e80bf0a22a83b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab9e13e95eee8c01cdd537d09587c805.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/17/cd1a38c9-4366-4d17-a9c4-a92f6251fd80.jpg?resizew=218)
(1)估计该校学生一周平均使用手机上网时间(每组数据以该组中点值为代表);
(2)将一周使用手机上网时间在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c24d71b23d58884c001953c169158df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/048ebd9c77bfc110146f6a950c7a94f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4fe9d95f1efeef9d673eddb70961780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
近视 | 不近视 | 合计 | |
长时间使用手机 | |||
不长时间使用手机 | ![]() | ||
合计 | ![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b38cfee12dbeeab57c707dca8643538a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356b05e46b10ee51c3e43546d73ec96c.png)
![]() | 0.1 | 0.05 | 0.010 | 0.005 | 0.001 |
![]() | 2.706 | 3.841 | 6.635 | 7.879 | 10.828 |
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4卷引用:贵州省黔东南州从江县2024届高三上学期11月检测数学试题
贵州省黔东南州从江县2024届高三上学期11月检测数学试题广东省珠海市金砖四校2024届高三上学期11月联考数学试题黑龙江省齐齐哈尔市第八中学校2024届高三上学期1月大联考考后强化卷数学试题(已下线)4.3.2 独立性检验(分层练习)-2023-2024学年高二数学同步精品课堂(人教B版2019选择性必修第二册)
解题方法
9 . 已知
是等差数列,
为数列
的前
项和,且
,
.
(1)求数列
的通项公式;
(2)若
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fca2cc2768794136c1e4da47d2f0873e.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216876de04325fd250c38c485cbc34b7.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
10 . 函数
.
(1)求函数
的单调区间;
(2)当
时,若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a14115fa8fc7a3e413a6cfc01d8408b.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d1540b6b10f07a867618a1eec02e2a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f78ae07b1452e4f9dd8ba93db61d17.png)
您最近一年使用:0次