解题方法
1 . 已知等比数列
的前
项和为
,
,
.数列
的前
项和为
,且
,
.
(1)分别求数列
和
的通项公式;
(2)若
,
为数列
的前
项和,是否存在不同的正整数
,
,
(其中
,
,
成等差数列),使得
,
,
成等比数列?若存在,求出所有满足条件的
,
,
的值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07404ab51f404f9411f79bd4f1fde654.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/2955370028ae5a872079c12bfedc3b4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96f4aaea63f5ed002251eab217a9a86f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b8d543c7d503fc1073503fc1d52faa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/385275d29d8c8a7841eaeaa3dfab2cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab01dd4084e2d233f3a8a1de277f1748.png)
(1)分别求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07404ab51f404f9411f79bd4f1fde654.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b8d543c7d503fc1073503fc1d52faa.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bd58bdf57dcd9496d5d273ac764123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ddad3d9fdb5e9951b6a1c31f9a72a71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3363b34c30552a3dc76b2f66fe5288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c10d8295cb4e4fe9284f59d86442d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be9d20e9994857aefb65077b666a6a01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69501a69461df9471c11e93450d14164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
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5卷引用:江西省新余市2021-2022学年高二上学期期末数学(理)试题
江西省新余市2021-2022学年高二上学期期末数学(理)试题山东省烟台市2020-2021学年高二上学期期末数学试题(已下线)专题09 《数列》中的存在性问题-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)2023版 湘教版(2019) 选修第一册 过关斩将 第1章 综合拔高练(已下线)广东省2022届高三一模数学试题变式题17-22
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2 . 已知函数
. 请在下面的三个条件中任选两个解答问题.①函数
的图象过点
;②函数
的图象关于点
对称;③函数
相邻两个对称轴之间距离为
.
(1)求函数
的解析式;
(2)若
是函数
的零点,求
的值组成的集合;
(3)当
时,是否存在
满不等式
?若存在,求出![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
的范围,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85d7823160b71e0410645975559192a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e544ce30f9debf4e626677378bbcbff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aad9d85bdc29cd88b292d4f49ea2f5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a13867a8276268b7bf9b20e489925095.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/558e5164dd5bc085d892cd82072fa8ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edfe2dae662535ef325fc40898c6508e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
的范围,若不存在,请说明理由.
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3 . 函数
与
(
为常数)的图象有两个不同的交点,则实数
的取值范围为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad6135580e4c4ad48e9f35cd64d85eb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/617fd165f09a41aded57b2f8e017f1cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4843e8221812359b33aa8487b8e1bbf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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8卷引用:江西省新余市2021届高三上学期期末质量检测数学(文)试题
江西省新余市2021届高三上学期期末质量检测数学(文)试题(已下线)重难点 06 函数与导数-2021年高考数学(文)【热点·重点·难点】专练(已下线)专题20 导数及其应用(客观题)-2021年高考数学(文)二轮复习热点题型精选精练(已下线)专题21 导数及其应用(客观题)-2021年高考数学二轮复习热点题型精选精练(新高考地区专用)(已下线)专题22 导数及其应用(客观题)-2021年高考数学(理)二轮复习热点题型精选精练(已下线)专题04 导数应用-备战2021年高考数学(文)经典小题考前必刷集合福建省莆田第二十五中学2020-2021学年高二下学期月考(一)数学试题四川省内江市内江市第六中学2020-2021学年高二下学期期中数学(理)试题
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解题方法
4 . 已知椭圆
的一个焦点与抛物线
的焦点重合,且直线
与圆
相切.
(1)求椭圆
的方程;
(2)设斜率为
且不过原点的直线
与椭圆
相交于
、
两点,
为坐标原点,直线
的斜率分别为
,若
成等比数列,推断
是否为定值﹖若是,求出此定值;若不是,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4856428c4f87eada4e504fce8cc91d1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac89d45e79b10741d93a9443c70adde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f85a6bcbffa8befeb967bb527cd43a4.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a5e484dfef494d27bc35ae7b8cf75d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fec6efa333e34c57722ca8dcb8fbf9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17a0d9a2f14f7e789892487d6585804a.png)
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5卷引用:江西省新余市第一中学2022-2023学年高二下学期第一次段考数学试题
名校
解题方法
5 . 如图,在四棱锥
中,
,
,
,平面
平面ABCD.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/d8dee249-e133-4f35-aca8-f9cbba1cddcc.png?resizew=180)
(1)求证:
;
(2)已知二面角
的余弦值为
.线段PC上是否存在点M,使得BM与平面PAC所成的角为30°?证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/946470cef32a0bd769b3809351d8ee61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279e119eed905cf15026649a1b86502a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e4d19bf237a6fca67e0d01a9ddb726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04c222223dae9ef27d4c132534d9848.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/d8dee249-e133-4f35-aca8-f9cbba1cddcc.png?resizew=180)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545e18836bc7fee22f8f813a6f525d93.png)
(2)已知二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9f1e2b86f4eca37c72011d3dffb0c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f1145c162038df3c7184d9201c628e.png)
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5卷引用:江西省分宜中学2020-2021学年高二下学期第一次段考数学(理)试题
名校
解题方法
6 . 已知椭圆
:
的右顶点为
,离心率为
.
(1)求椭圆
的标准方程;
(2)过椭圆
的左焦点
且斜率为
的直线
交椭圆
于
,
两点,
为坐标原点,问椭圆
上是否存在点
,使得
?若存在,求出直线
的方程;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb374fd349306abf2f784b6a28d93a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2799abb64fd7bfce9dfa7228aa460564.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cff51d38fdcb552216b2ef94fa75be39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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7 . 已知函数
,记方程
在
上的根从小到大依次为
,
,
,求
=____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf7482a8db0d50d0f214c217f782b2e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e28c96d843f2a789b5ab775df70735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c973172a1091ecfd0da801f017798d4.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/ed09fcd02e233ecfa12a9459a54d6cfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1707e9d08402fcd2e8f2c6ec69991f.png)
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8卷引用:江西省分宜中学2020-2021学年高一(普班)下学期第二次段考数学试题
江西省分宜中学2020-2021学年高一(普班)下学期第二次段考数学试题江西省南昌市第二中学2020-2021学年高一上学期第三次月考数学试题江西省高安中学2020-2021学年高一上学期期末考试数学(理)试题(已下线)第19讲压轴综合题(练习)-【教育机构专用】2021年春季高一数学辅导讲义(沪教版2020必修第二册)(已下线)专题5.5—三角函数的图像与性质1-2022届高三数学一轮复习精讲精练(已下线)上海期末全真模拟试卷(3)-2020-2021学年高一数学下册期中期末考试高分直通车(沪教版2020必修第二册)(已下线)专题4-1 三角函数性质、最值和w小题归类-2022年高考数学毕业班二轮热点题型归纳与变式演练(全国通用)(已下线)专题4-2 三角函数图像与性质归类-1
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8 . 已知椭圆
的上顶点为P,右顶点为Q,直线PQ与圆
相切于点
.
(1)求椭圆C的方程;
(2)若不经过点P的直线
与椭圆C交于A,B两点,且
=0,求证:直线l过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2845cff59808d0945644a6c867e40740.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12107f5e60cd9c834a5c2ce9b1781294.png)
(1)求椭圆C的方程;
(2)若不经过点P的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a33e5d0dbdd0f15854f0d7dd8b53058.png)
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7卷引用:江西省新余市2022届高三上学期期末数学(理)试题
江西省新余市2022届高三上学期期末数学(理)试题2019届百师联盟新高三开学摸底考(全国I卷)文科数学试题2019届百师联盟新高三开学摸底考(全国II卷)文科数学试题(已下线)考点53 圆锥曲线的综合问题-定点、定值和探索性问题(考点)-备战2021年新高考数学一轮复习考点微专题(已下线)专题9.6 直线与圆锥曲线(精讲)-2021年高考数学(文)一轮复习学与练安徽省皖江名校联盟2020-2021学年高二下学期开年考理科数学试题甘肃省天水市第一中学2020-2021学年高三上学期第四次考试数学(理)试题
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解题方法
9 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d03650f92932b6964eccc15456f878.png)
.
(1)若直线
为曲线
的切线,求a的值;
(2)当
时,设
,
,…,
,且
,若不等式
,求m的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d03650f92932b6964eccc15456f878.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf8197e4f3fd18815045d29c357a863.png)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0570a4cc1fe386c91a0f2fe0af9c0758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.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/bed29096a5cc333a83da72ec3fdd7b1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd59097b8f0b76bb44e28306f7c28a03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb60479a4a0a92b88e1dddf082841d7.png)
您最近一年使用:0次
2020-12-30更新
|
154次组卷
|
2卷引用:江西省新余市第四中学2021届高三上学期第五次段考数学(理)试题
10 . 如图所示,抛物线
上点
到焦点
的距离为4,
是抛物线
上的动点,过点
的切线
交
轴于
点,以
为圆心的圆与直线
及直线
分别相切于
、
两点,且直线
与
轴的正半轴交于
点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/497c4abf-fc17-48ca-8bc9-4568e297d668.png?resizew=191)
(1)求证:
;
(2)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f042f39186cbd0e922e654cf6c9e87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.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/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/497c4abf-fc17-48ca-8bc9-4568e297d668.png?resizew=191)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/314c80eec32322702bb13ebef064ff16.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b18aa83c704c7fd3be3d96c7ba4f4562.png)
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