名校
解题方法
1 . 若非空实数集X中存在最大元素M和最小元素m,记
.下列命题中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9f1b59e1b3b2dd16d77f1813cf967a6.png)
A.已知![]() ![]() ![]() ![]() |
B.已知![]() ![]() ![]() |
C.已知![]() ![]() ![]() ![]() |
D.已知![]() ![]() ![]() |
您最近一年使用:0次
2021-12-21更新
|
1035次组卷
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5卷引用:北京市第五中学通州校区2022届高三上学期期中考试数学试题
北京市第五中学通州校区2022届高三上学期期中考试数学试题北京市第十三中学2022届高三12月月考数学试题(已下线)2020年高考浙江数学高考真题变式题6-10题上海市浦东新区上海实验学校2024届高三下学期3月月考数学试题 上海市实验学校2023-2024学年高三3月数学练习试卷
2 . 在棱长为2正方体
中,
,
分别为
和
的中点,
为
上的动点,平面
与棱
交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/cf26b004-235d-48d6-834c-f404ba8c046e.png?resizew=161)
(1)求证:点
为
中点;
(2)求证:
;
(3)当
为何值时,
与平面
所成角的正弦值最大,并求出最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320e6d8f4930226455010435a200deef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/cf26b004-235d-48d6-834c-f404ba8c046e.png?resizew=161)
(1)求证:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/725402aaa8a61fab0f5ac6f73130c17f.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/408871c2b71ef88d6f556ce53cf73cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be61a34b88a6cfa41578030cf42d3ef3.png)
您最近一年使用:0次
3 . 设函数
,
.
(1)当
时,求曲线
在点
处的切线方程;
(2)若函数
在区间
单调,求实数
的取值范围;
(3)若函数
有极小值,求证:
的极小值小于1.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79c1d053b9420d7574311787ec63301a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c9ff8e7ad3ff9f6b23ade538c003ac0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
2021-11-19更新
|
730次组卷
|
2卷引用:北京市通州区2022届高三上学期期中数学质量检测试题
解题方法
4 . 设函数
的定义域为
,集合
.
(1)若
,
,求证:
;
(2)若
,
,若
,求实数
的取值范围;
(3)设
,
,
.讨论函数
与集合
的关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47326fcf6aa007c383a04edb6419410e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bc132f215b296298e497f8c04a2956f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/246de316aacce5e2a1b482840ff02f82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57cac663990f61a4a3086c6bea3d51f9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/688afe078f708dcdec80f68a1386c041.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59f412e27806d298e08c365ee16b00f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e74920f57028200604c2691c8f0fb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b36292fbe1b8bcd349da59c9d9e108a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d8932d7d732b430acad2a95bac798b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
5 . 已知椭圆
的短轴长为2,离心率为
.
(1)求椭圆C的方程;
(2)点P是椭圆C上一点,且在第一象限内,过P作直线与交y轴正半轴于A点,交x轴负半轴于B点,与椭圆C的另一个交点为E,且
,点Q是P关于x轴的对称点,直线
与椭圆C的另一个交点为
.
(ⅰ)证明:直线
,
的斜率之比为定值;
(ⅱ)求直线
的斜率的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(1)求椭圆C的方程;
(2)点P是椭圆C上一点,且在第一象限内,过P作直线与交y轴正半轴于A点,交x轴负半轴于B点,与椭圆C的另一个交点为E,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829f9180ddd9aa1a0ee0dc520f4e0b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf25e032b5599ac49383de06e776365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(ⅰ)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
(ⅱ)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
您最近一年使用:0次
2021-04-22更新
|
1106次组卷
|
4卷引用:北京市通州区2021届高三年级一模数学试题
北京市通州区2021届高三年级一模数学试题全国Ⅲ卷2021届高三高考模拟卷数学(理)试题(已下线)押第20题 圆锥曲线-备战2021年高考数学(理)临考题号押题(全国卷2)江苏省镇江市扬中市第二高级中学2022届高三下学期高考考前模拟数学试题
名校
6 . 已知有限数列
为单调递增数列.若存在等差数列
,对于A中任意一项
,都有
,则称数列A是长为m的
数列.
(1)判断下列数列是否为
数列(直接写出结果):
①数列1,4,5,8;②数列2,4,8,16.
(2)若
,证明:数列a,b,c为
数列;
(3)设M是集合
的子集,且至少有28个元素,证明:M中的元素可以构成一个长为4的
数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78af5020619465dd4f48090d1c27825.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588d22323fe2e6666bb7052a5d686b60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a272adba0f1120109824440f0e252c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d3acb298edf3a1af4b0c18396e7c453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
(1)判断下列数列是否为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
①数列1,4,5,8;②数列2,4,8,16.
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cf36a8b0b9303e515cab436d325cd90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
(3)设M是集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b598d2cc3e2ea8e6a76670b1feecbad4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
您最近一年使用:0次
2021-04-22更新
|
1041次组卷
|
6卷引用:北京市通州区2021届高三年级一模数学试题
北京市通州区2021届高三年级一模数学试题(已下线)4.2.2 等差数列的通项公式(1)-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)北京首师附中2021~2022学年高二上学期1月月考数学试题北京市师大附中2022-2023学年高二上学期数学期末试题北京卷专题18数列(解答题)北京市第九中学2024届高三上学期12月月考数学试题
名校
7 . 已知函数
.
(1)若
,求曲线
在点
处的切线方程;
(2)若
,求证:函数
存在极小值;
(3)若对任意的实数
,
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7ced45edca4a20560ed7f07118657e6.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d52b49b38bf76fc95adc17242bde53ee.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若对任意的实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4318a47d7e83d587e74bab4d3d1f6883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2843c5568022bd4cd273c51e0a35184.png)
您最近一年使用:0次
2021-04-07更新
|
2992次组卷
|
9卷引用:北京市第五中学通州校区2022届高三上学期期中考试数学试题
名校
8 . 已知集合
的元素个数为
个且元素为正整数,将集合
分成元素个数相同且两两没有公共元素的三个集合
,即
,
,
,
,其中
,
,
,若集合
中的元素满足
,
,
,则称集合
为“完美集合”.
(1)若集合
,
,判断集合
和集合
是否为“完美集合”?并说明理由;
(2)已知集合
为“完美集合”,求正整数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50a7bca74a5e04b8b82642a9b9054d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d5add49505a286370d75c05bb37a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ed5930525a04c8fa26e535147e3085.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46fdf7db887d5659fa6bfe223cc42f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a69c10cc4c8d227788f3c04890b108.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/027268ee20f5fe6e4397baa0ff3e2b85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60d88a500f2ea391a6361a2e02a90c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7cf80514989b824d320ede29acd9bda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/555a8d49e629a33603d44435314c4d2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49ca97c733e72b990f1ce7a39aea6510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7304f4a3860fb2ce6535b51166d21446.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5528d8496504b48fe16e8d4990fc9380.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b052876711132da9ca65a3330251bbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(2)已知集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39bc70fdaa725f9350b5a3356edeeb52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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2019-04-10更新
|
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7卷引用:北京市通州区运河中学2021-2022学年高一10月诊断数学试题
北京市通州区运河中学2021-2022学年高一10月诊断数学试题(已下线)专题06 集合中的压轴题(2)-2021-2022学年高一数学上册同步培优训练系列(苏教版2019)【全国百强校】上海市建平中学2018-2019学年高一上学期期中考试数学试题江苏省无锡市辅仁高级中学2020-2021学年高一上学期教学质量评估(一)数学试题江苏省泰州中学2020-2021学年高一上学期第一次质量检测数学试题北京市中关村中学2020-2021学年高一上学期期中考试数学试题湖北省荆州市沙市中学2022-2023学年高一上学期第一次月考数学试题