1 . 已知复数
,
,…,
,
,
,…,
,满足
,
,…,
互不相同,
,
,…,
互不相同.已知对任意正整数
,均有
.求证:
,
.
![](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/dad7f66c97bfce4c00c53d86700c961b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47233e81de2d9d728c80f02359f1af4a.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/dad7f66c97bfce4c00c53d86700c961b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47233e81de2d9d728c80f02359f1af4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58c8214c80f9e949b1ac8d6e41b597e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cddf38600954700caa8a227dae4e8ced.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8389928ac57b99f195e6bef80d2a28d3.png)
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2 . 已知多项式
.
(1)若
,且
有三个正实数根
,
,
,证明:
;
(2)对一般的正整数
,若
,
,
,
,证明:方程
的根不全是正实数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d310b3ca60508199bb95f15860232f4d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b92b70365c63607daecdc8deb73ecf.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/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8de1c943439d47ca9e9a02e558a1b2e.png)
(2)对一般的正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5818ede14d21f6df9ef9c2bfe09286c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9772498c845b2043b375d1e8d8416b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e506a31a62c9581edb62218fce59b51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f13c73c7894077a19b6c403587de96a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4e01e8ef5adf43e1f21591adbc3851.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b92b70365c63607daecdc8deb73ecf.png)
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名校
解题方法
3 . 已知方程
在复数范围内的一个根为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab07ff1f324c5972be3448bf484e1e3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e260c8ee5d70fc3482e9a7efc40767.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
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2023-08-06更新
|
201次组卷
|
2卷引用:辽宁省铁岭市昌图县第一高级中学2022-2023学年高一下学期期末数学试题
4 . 已知实数
互不相同,对
满足
,则对
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ca4d5b509994ebfa7ab91ca6cc4218b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b41a11a790f94a3e16215cbd96b8c50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2e21d8d40142323e85e8e6584f28db4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/228bef59ba3da7164ad405d42e0be47d.png)
A.2022 | B.![]() | C.2023 | D.![]() |
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2023-01-04更新
|
327次组卷
|
2卷引用:北京市东城区2022-2023学年高一上学期期末统一检测数学试题
5 . 方程
的两根
、
,满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e8bc12f5ec0effdd3dee302b3a9bc4a.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/1626df8a0d2e7e4786c35def92b67168.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
您最近一年使用:0次
6 . 设
,
是方程
的两个实数根,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b12a4eecd249473a831d0ee472470240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9565876bc50bceb63e5793c8c67a9032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0f0acd0954fe2e448912ad5c3f05ed8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3a2117639ee0238b78ae5f1b1902fe.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
22-23高三上·江苏盐城·阶段练习
名校
7 . 已知函数
:
(1)讨论
的单调性;
(2)设
,若
在
,
处的切线过点
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98b956e8f03bef528ac4d3f3d118d29f.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23204c7ce89219fd16a0c6e01f5ee8cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/362e7bee16baef0eec7fb661717e1f5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c36c639bebbd313bd594b9c56d314738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31b2f4e61685e716a9ce91b939e10032.png)
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名校
8 . 已知方程
的两根为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e69a9dbff5907f61c3aad1321e310ce.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41527a0e6cee74e1177777a168ec81de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e69a9dbff5907f61c3aad1321e310ce.png)
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9 . 已知
、
是方程
的两个实数根,则代数式
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4cdd6f27334444c1884876b9e4cfe6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ca9a8dc6e69d8ae86e5233320ecf6e7.png)
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2022-09-06更新
|
991次组卷
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4卷引用:专题02韦达定理-2020年初升高数学无忧衔接(沪教版)
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10 . 若
是关于x的实系数方程
的一个根,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ab5dd9298a8f1dd2167a621ca5313f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b800b7d6a688abf8a3018c133cec9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
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|
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5卷引用:山东省威海市文登区2021-2022学年高三上学期期中考试数学试题
山东省威海市文登区2021-2022学年高三上学期期中考试数学试题上海市进才中学2022-2023学年高一下学期期末数学试题江苏省扬州市仪征市2022-2023学年高一下学期期中数学试题江西省南昌市第十九中学2021-2022学年高二上学期期末考试理科数学试卷(已下线)9.3 实系数一元二次方程-同步精品课堂(沪教版2020必修第二册)