1 . 数列满足
,求使该数列
有极限的
的最大值.
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解题方法
2 . 设函数
的定义域为
,
为奇函数,
为偶函数,当
时,
.则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e81e15b871dd32b2438ef8025bcc42d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d7661d3fc28f785b438ad8c8f9d240a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eac2b31a19918895e5af2d316490e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8a245dba2149093fc2a485baa35de08.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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3 . 设数列
满足
,
,
,则下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb0f955e41b2aa53b3c700db92a8ddba.png)
A.数列![]() |
B.数列![]() |
C.数列![]() |
D.![]() ![]() |
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4 . 设数列
满足
,
,
,则下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6065aaa8f3f103d1bc960da8318ce35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55eda25b019959a02c8aec4e9a8a3a1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b0f2f136f989a1a8ccf82b17d36cdf8.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() ![]() |
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5 . 证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf929ce74e4a69cc61c1686d8d9f41c.png)
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2023高三·全国·专题练习
6 . 已知数列
满足
,
.
(1)证明:
.
(2)设
为数列
的前n项和,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78e887f2825f2f1cc2fab564b0bd35ec.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c46ca8b47107015953c8385c52a57f.png)
(2)设
![](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/ee77e52bf090220c5e8e440952b9607e.png)
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7 . 在数列
中,已知
,
.
(1)证明:
.
(2)证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2438f2272d7b7ab51dbbe587025a553d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6b6bb6ebb130e774ae4331e8511131.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e011e6233ec4339fa324a51a21bc13f.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4996bf303bb42b9b36cf0b3ab46a3d0b.png)
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2023高三·全国·专题练习
8 . 设数列
满足
,
.
(1)证明:
.
(2)设数列
的前n项和为
,证明:
.
![](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/fb2dbc4c08aa70076c1c12daeedcb298.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c31f2f5b97bc76078c101082bb76bb6.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cf1da18d91f7c98086553d157d1a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ffb575d8e0365de6ccab0d0645fc78a.png)
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2023高三·全国·专题练习
解题方法
9 . 已知数列
满足
,
.
(1)求证:
;
(2)求证:
;
(3)求数列
的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/086e9b14c35ef3c57b20f5e952ebf9c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4223bd6ee8f82d59d244371fbcddc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2bf37ed55ba1bf6d59ccee9da6b8ff.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e0123c4a3d497952ac6a5d0a54a1866.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee96afbd98ac32680e63b0b599ae6b5a.png)
(3)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
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2023高三·全国·专题练习
解题方法
10 . 已知数列
的前
项和为
,且
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
(1)证明:
是等比数列;
(2)求数列
的通项公式,并求出使得
成立的最小正整数n.(参考数据
)
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b8cb80269d538c2e30c0cf1c4884033.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c895d4ce5ce82ef9b311b9369b4de11.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846fa57d92d6ad44d6a0cafad1e71ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef64850887c5c8cad4d574b0b09307a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8476e21ce074eb710ac64ad1eb630453.png)
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