名校
1 . n个有次序的实数
,
,…,
所组成的有序数组
称为一个n维向量,其中
称为该向量的第i个分量.特别地,对一个n维向量
,若
,称
为n维信号向量.设
,
,则
和
的内积定义为
,且
.
(1)直接写出4个两两垂直的4维信号向量;
(2)证明:不存在10个两两垂直的10维信号向量;
(3)已知k个两两垂直的2024维信号向量
,
,…,
满足它们的前m个分量都是相同的,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/086eb439f6a1578fdba904825340772d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baa87d9662032c4b53e41634f3424b0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d5cd21ff3c760e7ec3130f5bfa8c91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a94fcc44ac04f54d5fcc1a6154b8b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d5cd21ff3c760e7ec3130f5bfa8c91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a414d372b680499f1c8ca1a7ae5f4d82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51cfee5ec6cb12cb32e04de5c387a2c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39e45b1c120de76ab330bf5e9cb98cce.png)
(1)直接写出4个两两垂直的4维信号向量;
(2)证明:不存在10个两两垂直的10维信号向量;
(3)已知k个两两垂直的2024维信号向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9541e55ef7917c4d5eec7e5062a6f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0de4fe4539ececcc2452bea1046c7148.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8c3f353a2ff4a61f8b81a3314c09e0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf2182d0dad848ccc76944d976befbf2.png)
您最近一年使用:0次
2 . 已知双曲线
的左顶点
,一条渐近线方程为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/2/8a0ee24d-ab37-47c1-98a5-a1470a1a64a7.png?resizew=185)
(1)求双曲线
的标准方程;
(2)设双曲线
的右顶点为
为直线
上的动点,连接
交双曲线于
两点(异于
),记直线
与
轴的交点为
.
①求证:
为定点;
②直线
交直线
于点
,记
.求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ef66f4832adc43902055a7e6d258037.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd99c5000629d7f49499d666e68f40d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/920fdf4cd0153c43eb7b9130b86de598.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/2/8a0ee24d-ab37-47c1-98a5-a1470a1a64a7.png?resizew=185)
(1)求双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4cf40b6cf2051622c0a52e84710c138.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6617a3c5f91562ad41f6f0dd6bd0b4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febf7413b35cf2889fdb57a6b519087c.png)
您最近一年使用:0次
2023-11-09更新
|
885次组卷
|
3卷引用:江苏省淮安市2023-2024学年高二上学期11月期中数学试题
江苏省淮安市2023-2024学年高二上学期11月期中数学试题江苏省淮安中学2023-2024学年高二上学期期中数学试题(已下线)专题03 圆锥曲线题型全归纳(九大考点)-【寒假自学课】2024年高二数学寒假提升学与练(人教A版2019)
名校
解题方法
3 . 三阶行列式是解决复杂代数运算的算法,其运算法则如下:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281c685c6a79c8293c8b5083c3a8dc4c.png)
若
,则称
为空间向量
与
的叉乘,其中
,
,
为单位正交基底. 以
为坐标原点、分别以
,
,
的方向为
轴、
轴、
轴的正方向建立空间直角坐标系,已知
,
是空间直角坐标系中异于
的不同两点
(1)①若
,
,求
;
②证明
.
(2)记
的面积为
,证明:
.
(3)证明:
的几何意义表示以
为底面、
为高的三棱锥体积的
倍.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281c685c6a79c8293c8b5083c3a8dc4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e91aaddb8691f8afa477a96bf630631.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aba64ae92194bc4f0f6e49725471542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8643f24c3af715421ec0ccd3224ed453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d541143135cb9b8166bc631a85ac6a41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a471332d4f3731d90f62fdf819f39824.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e73db31aecdde14e0002f082d9091df0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2980a18e4d0a2a795b7983a1a1866db7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1821c677712026f8de34fe924b1f52a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.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)
(1)①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41ef077626c88964805a45849471a1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bb22d1c614d99e2639864e43f4b6277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00db2bada2cfc90c5213aca8af17df4c.png)
②证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bb8623a42db5ceb745a16d72739f513.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29aa828f2bd9a5e63ee58dcaa9d0d336.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0505ce82dd5726c22fcaac54d01d630b.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8191a760981f2d67648905665c8b167a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad58b362528b814739ceb7fe5febfc28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
您最近一年使用:0次
2024-03-07更新
|
901次组卷
|
8卷引用:江苏省盱眙中学2023-2024学年高二下学期第一次学情调研数学试题
江苏省盱眙中学2023-2024学年高二下学期第一次学情调研数学试题河南省部分重点高中2024届高三普通高等学校招生全国统一考试(期末联考)数学试卷江苏省扬州市仪征中学2024届高三下学期期初调研测试数学试题 河南省部分重点高中(青桐鸣)2023-2024学年高三上学期期末大联考数学试题(已下线)专题22 新高考新题型第19题新定义压轴解答题归纳(9大核心考点)(讲义)江苏省江都中学2023-2024学年高二下学期3月联考数学试卷(已下线)第七章 应用空间向量解立体几何问题拓展 专题二 平面法向量求法及其应用 微点2 平面法向量求法及其应用(二)【培优版】(已下线)专题08 期末必刷解答题专题训练的7种常考题型归类-期末真题分类汇编(北师大版2019必修第二册)
解题方法
4 . 已知函数
,
为实数.
(1)若
在
上单调递增,求实数
的取值范围;
(2)若
.
①证明:
既有极大值又有极小值;
②若
,
分别为函数
的极大值和极小值,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/363aaad7b209645176bb88f91765218b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/113cd76ec8016056cda65fea47359299.png)
①证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
②若
![](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/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a23d05ff2aee22d9da978f30ff84ca0.png)
您最近一年使用:0次
名校
解题方法
5 . 已知函数
,
.
(1)若
,证明:
;
(2)若函数
最大值为
,求实数a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a3a8c8122cc4a2163760e7c5edfbba3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7750f900b4ba09ad4680d39481dc5ea9.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3901dfd4995fe91bcd1ccc26b5cdfa2b.png)
您最近一年使用:0次
6 . 函数f(x)=ex﹣2sinx﹣1,设函数
.证明:
(1)m(x)在区间
上存在唯一的极小值点;
(2)f(x)在
上有且仅有两个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7ed26b99720fa445c12460df83dbe18.png)
(1)m(x)在区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09fee0e4f79e30bbff8e4be338f6adec.png)
(2)f(x)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e327b8691c6f542e0709129c302a8ceb.png)
您最近一年使用:0次
名校
解题方法
7 . 已知函数
,
,其中
,
是
的一个极值点,且
.
(1)讨论函数
的单调性;
(2)求实数
和a的值;
(3)证明
(
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7374847b988fe9d400614d62c191f99a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4483b5a70cf1a8f3410a637f7417a6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee472f4c364364dca231156703ab291.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
(3)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b02102099e1d5634ad44717ec6a89576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
您最近一年使用:0次
2020-10-18更新
|
1337次组卷
|
16卷引用:江苏省淮安市盱眙中学2020-2021学年高三上学期期中数学试题
江苏省淮安市盱眙中学2020-2021学年高三上学期期中数学试题2020年普通高考(天津卷)适应性测试数学试题(已下线)2020届高三3月第01期(考点03)(文科)-《新题速递·数学》(已下线)2020届高三3月第01期(考点03)(理科)-《新题速递·数学》2020届四川省成都外国语学校高三3月阶段性检测文科数学试题2020届山东省淄博市部分学校高三下学期3月教学质量检测数学试题江苏省徐州市第一中学2019-2020学年高二下学期开学收心检测数学试题2020届陕西省西安中学高三第一次模拟考试数学(理)试题(已下线)第4篇——函数导数及其应用-新高考山东专题汇编江苏省南京市六校联合体2020-2021学年高三上学期暑假学情检测数学试题江苏省南通市2020-2021学年高三上学期期中数学试题江苏省南通市海门市包场高级中学2020-2021学年高三上学期11月阶段检测数学试题江苏省南通市海安市曲塘中学2021-2022学年高三上学期期初9月调研测试数学试题江苏省南通市名校2021-2022学年高三上学期9月质量检测数学试题(已下线)第35讲 函数与数列不等式问题-突破2022年新高考数学导数压轴解答题精选精练福建省厦门第一中学2022-2023学年高三上学期期中考试数学试题
8 . 已知数列
和
的前
项和分别为
和
,且
,
,
,其中
为常数.
(1)若
,
.
①求数列
的通项公式;
②求数列
的通项公式.
(2)若
,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87ea014220aa658c8baa6e1f43e686a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80ada913267398cc292bb7b69dae4cdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ec6fb9e0625b85be3103d317fbb0cca.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdfec4233214c3a729c843dee0d186db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2753dc1c83d54044b89e628a7eb247f8.png)
①求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5344eadd4711db34e3f935aedd5fb270.png)
②求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ec12a9a60f82467bf7bf834a9a9b1f7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b03536dc607a70a2cc597e739cb345f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01f56a22d95eab351e09da1afb8153bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ca788f0dfc8b34681bf6ef19b98ab1.png)
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9 . 已知数列
各项均为正数,
是数列
的前
项的和,对任意的
,都有
,数列
各项都是正整数,
,
,且数列
,
,
,…,
是等比数列.
(1)求
,
;
(2)证明:数列
是等差数列;
(3)求满足
的最小正整数n.
![](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/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/786dce700f614ef34e9cf42ddee9022e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eab7d59ce066c8f0b346719003f8e28f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22fd0f362d2c0560c6207c5634d3732a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec342b0a17f898d4e70f75f04b50fdb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb16f890ca919e5a116f3056d7b04f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f814b537650d7b2ab376a1dbca25d84d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
(2)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)求满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f3be18ca37723026c986af0d3e9968f.png)
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2020-10-11更新
|
790次组卷
|
4卷引用:江苏省淮安市盱眙县马坝高级中学2020-2021学年高二上学期第一次质量检测数学试题
解题方法
10 . 已知函数
.
(1)若曲线
在
处的切线与直线
平行,求实数
的值;
(2)若函数
有两个极值点
,
,且
.
①求实数
的取值范围;
②求证:
.(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf6a2c0b6e5e8f76a466155b1f4682e8.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f42457c945c02fd46fb018712e73171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
①求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
②求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87990e01890e66a5b4f53c846538b49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe8830dd6909146c867a27439e0a4afc.png)
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