2023高三·全国·专题练习
1 . 已知数列
满足
.分别判断
和
时数列的单调性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fff8762d16e175f7a4e380eb3cbdb21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d0ae8af1b4dfc31c317fcbe291d28b9.png)
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2023高三·全国·专题练习
2 . 已知数列
满足
.
(1)证明:
是正整数数列;
(2)是否存在
,使得
?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9dbaa0d7dbcc2e753194ba30e046db.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39891fee58e55b44b4103f46c3608891.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d3ca83b04f476083c4044c33347a038.png)
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3 . 设
是实数,证明:对任何满足
的实数,不等式
恒成立的充要条件是:
且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0172ff629066911f79cfc683df46ef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d90637cd4ad83768f311888ac4d86ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef6c8b8ffe3eae7732826939aede56b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1095fa560d989655a46f0ecdd7d994b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11c9b0ec4788c1ceeefe5d2113f84d94.png)
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2023高三·全国·专题练习
4 . 为了便于使用阿贝尔公式,我们考虑其一般形式的不等式:设
,
, 记
,则对于1,2,…,
的任一排列
有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06049d26c0bc5e25a5dc4b53cb5b4143.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04296d0d955a763ac6b8170c29478d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf66d07440b949d9392f5a11ef8d4dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eba1ab32dd878c3544a4b4aa84b4a93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad84cafa7de4c1c926cb4c11de42280f.png)
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2023高三·全国·专题练习
5 . 设
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee130afa32ad7a7a8d9d2b7af2b11cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcb054cad1d4e574aedf3ae32d3d2a67.png)
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2023高三·全国·专题练习
6 . 已知:
是首项是
,公差是d的等差点数列,
是首项是
,公比是
的等比数列.求
的前n项和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b715e7842b95f654f16056a7c7f2abe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09e15be6eb86b5f1746b0036a87c9ca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec4bdc2a6d4fc387dc621f0b5a268c5.png)
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7 . 求符合条件的序列
的个数,满足如下条件:
(1)
;
(2)
,有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ed4bbcd82234606bc1b7a4e45f074f.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91c69891459249e3cd9130a4e58aebcd.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33b91d5fd3ecbc0873ff2e9c467ed26c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f5f83f22403ce79ca07af950eb399c3.png)
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名校
8 . 如图,
是曲线
上的
个点,点
在
轴的正半轴上,且△
是正三角形
是坐标原点).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/86311efd-f7c4-4a46-8bfb-5e6933f9905a.png?resizew=249)
(1)求
、
、
的值及数列
的递推公式;
(2)猜想点
的横坐标
关于
的表达式,并用数学归纳法证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/857d97c35c872937e4172dbc2ede1af2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/956620959792f8c3a28ed0fc4bf053d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3f94253ca8e33eca70b1a9ee6c2a0e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27853b475a8bc2bfe297bbdbdaaa86d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a617f7ebacc3d380868cf6e002c0be3e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/86311efd-f7c4-4a46-8bfb-5e6933f9905a.png?resizew=249)
(1)求
![](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/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)猜想点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b25286f6029da66ce5270aacd05184f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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9 . 已知两个均含有
项的有限数列
,
,其中对于
,
且
.定义数列
与
之间的距离:
.定义数列
的“和序列”
,其满足对于
,
,数列
的
项和记为:
;定义数列
的“和序列”
,其满足对于
,
,数列
的
项和记为:
.
(1)已知数列
,
,求
和
;
(2)当
且
时,求
的所有可能取值;
(3)当
且
时,求
的最大值和最小值,并分别列举一对数列
,
,使
取到最大值和最小值;
(4)求证:对于
,当
且
是4的倍数时,
的最小值为0;
(5)当
,
时,直接写出一对数列
,
,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5d8aa940a0e54ac8979395fc6dff741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad97e1eb89a88cb2294a7c6715a45b3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff8c536a4f234f76110738d8f0fe343e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a406d53fd6ffd9ee6cd914f5e2b0a9bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/572366af4b70473246d02890f08e5bf4.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/4fdf61eeaedb55fceca383cced5a2a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b93f46e2f1e4c9b7c1e6b65cb4b71a8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff8c536a4f234f76110738d8f0fe343e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c347988fa8b9a610e98d8457a7c3c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d70d5962157e2116e7f1a267153967.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4a3ecd7015e91acdaf5dab17cd4db0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a35dc828d8d4cd583ec2f59fc51cc13c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff8c536a4f234f76110738d8f0fe343e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b6bfb29dcb99958d2f7044f95228a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b3961f5681dca061c2d5eccdfa1d6b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32eda5781c401532afa23e7f7fbbeb38.png)
(1)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e9f8c9d7cd0c8dcb5b6a29326f3000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4593b4328615e3d4cb4bb409cec24fa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3bcb4828b16c8e845492f1a53ddd9a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a5f4d7aad74922a9af3f9d0c04e4bf.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac3649308b528fd56545ba102dc42d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e79b6edfd5f5bb3866599fcb2aa6f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93ce4e30be12ce8f1d3fe5299ba630fb.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe08722cf9300fe188dbbb71989c06c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1ffbdfab9dff3ff41ea474f06375032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93ce4e30be12ce8f1d3fe5299ba630fb.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/93ce4e30be12ce8f1d3fe5299ba630fb.png)
(4)求证:对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86bc44f533c05d764a6f576ca47a4ba5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc930ac7a42a0ec0ce9c65c9e7c24182.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3bcb4828b16c8e845492f1a53ddd9a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93ce4e30be12ce8f1d3fe5299ba630fb.png)
(5)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe08722cf9300fe188dbbb71989c06c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8758b01cebe286da8592711f614892.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/c7ae7de525dccd6844f5477dac832182.png)
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10 . 已知数列
,
,…,
的各项均为整数,且对任意的
,2,…,
,都有
.将
的所有项之和记为
.
(1)若
,
,求
的最大值;
(2)若
,求证:
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/140b9dbcada4ac2e5fe3cc30009bcd67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5453ec6a9e8b96357c888ea863ddcf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7334c46af837676ada9575630a48d60f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c45176df950dfe48b8ca7eac08ee349.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa2648793a3889448088fa3f9f5aa49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249ccefb918d906ca640ec76e53247e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bba7a40102e81f5759f7b05ebf5a18c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcc133d5b11b33a904875182d8c8261.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2815b24f5a89be7ae53aed93182e8988.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bba7a40102e81f5759f7b05ebf5a18c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f8a0d4158a6df1bf0631095eb51c10c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eb189e7f5f358b2de87dc4b93413366.png)
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