23-24高二下·上海·期末
1 . 已知点
,
满足
,
,且点
的坐标为
.
(1)求过点
、
的直线
的方程;
(2)试用数学归纳法证明:对于任意
,
,点
都在(1)中的直线
上;
(3)试求数列
、
的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/079433d8cf832cc8ee996f87a7494a99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c325f5932b1d134c7613e0fa6b32d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/494852b4d9a733c2280ffdcc61922e55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ad9dba73c9dfa896e44bc19571f3377.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5030685d4bfdaba51d78d4678f3e101c.png)
(1)求过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)试用数学归纳法证明:对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a40142c84be68ee2918c3a8303388c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e167b43045b3297248e334c41c621b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)试求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
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解题方法
2 . 已知数列
、
满足
,
.
(1)若数列
为等差数列,求数列
的通项公式;
(2)若数列
是公比2的等比数列,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c5a7a17a394e868e0acd1803a9ab795.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/792705b149bd8b752858c060dc67fbc2.png)
(1)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
(2)若数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f329b217e1051b23f0d61023cdc6e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092aebb9b86d397caa4fd9308b35ad57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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3 . 已知数列
中,
且
.
(1)求数列
的第2,3,4项;
(2)根据(1)的计算结果,猜想数列
的通项公式,并用数学归纳法证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1bae03ee4ac75dacfb026290e4207dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be815a472dbc3112591a3c311750b1ba.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)根据(1)的计算结果,猜想数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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4 . (1)若数列
满足
,
,求
;
(2)若n为大于1的自然数,且
,用数学归纳法证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d82dbe5193afdc960f9c2f4e6af00c12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfaf50e5ebc9e68e84cd73598dd878d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
(2)若n为大于1的自然数,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3d6c22965d737517992d06984f051b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9ee27f8eae5177de7cf1c9d943c8ae2.png)
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5 .
,求所有的
,使得
中有无穷多项为正整数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad039ab9ca99b3d62b798884e8988b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/629507dcfdeb6866da428c4f45e2b21d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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名校
解题方法
6 . 在数列{an}中,
.
(1)求出
,猜想
的通项公式;并用数学归纳法证明你的猜想.
(2)令
,
为数列
的前n项和,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15e779d7f20c595a2f7a67b98a68eff4.png)
(1)求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe61d313eeca8ba47478a9de40540db8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/022e55604bc18f62502221660211433e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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解题方法
7 . 给定数列
,称
为
的差数列(或一阶差数列),称数列
的差数列为
的二阶差数列……
(1)求
的二阶差数列;
(2)用含
的式子表示
的
阶差数列,并求其前
项和.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16fb7d443419966995e18239f2eb09e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77eb01fb0dfdd6f1e7ca28ceb7ff775.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16fb7d443419966995e18239f2eb09e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77eb01fb0dfdd6f1e7ca28ceb7ff775.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16fb7d443419966995e18239f2eb09e8.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f1eaaee5ba6c66cb91fbbf3e6d58a9.png)
(2)用含
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/757e2a635531e3b11bd03a8ec4b7b6da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f1eaaee5ba6c66cb91fbbf3e6d58a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/757e2a635531e3b11bd03a8ec4b7b6da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeadb619367f955549a75a4eeb931011.png)
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2024高三·全国·专题练习
8 . 等差数列
中,公差
是自然数,等比数列
中,
,
.现有数据①2,②3,③4,④5.当
中所有的项均为数列
中的项时,
可以取现有数据中的哪一个,为什么?有没有其他自然数也可以作为公差
?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aaee408bdec05bbdfcd4b841a331e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/012f1e5df0528c0f9a5754b7dc84424e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
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2024高三·全国·专题练习
解题方法
9 . 已知
.
(1)设
展开式中
项的系数为
,求
;
(2)设
展开式中
项的系数为
,求证
;
(3)是否存在常数
使
对一切
恒成立?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a64447b451f9f578dbd2457a4473509.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e89220eb96a4757f2988362bc04e80c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e89220eb96a4757f2988362bc04e80c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1214f79b14f432f416a153acad0c40f.png)
(3)是否存在常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663a61ad241d5d874c9a9362f0ee917c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72bfeeba23951ff8a545e48eb8282f6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adfd5a27fa743a41ae4e1d8672e7a647.png)
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2024高三·全国·专题练习
10 . 已知
,设
与
的公共项数列为
,给出至少两种求
的方法,要求讲清思路,并求出
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a816492172dbfe02def8828592c1642.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59e7c7a84a4bdb959e95536d0404ceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59e7c7a84a4bdb959e95536d0404ceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59e7c7a84a4bdb959e95536d0404ceb.png)
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