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1 . 已知数列
的通项公式
,
,试求
,
,
的值,由此猜想
的计算公式,并用数学归纳法加以证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d4b55c92b722f0560191adb7999518.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7086ca364c07f8e7d84c31aa87550c87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74156327e5659301f391814605688899.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e1a1611f320c0f358df77aaae3f942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cf59c5075f9e6fdf3782b6c0e528237.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4fc8faefb26b233d4aa9dbef043aae.png)
您最近一年使用:0次
2021-09-13更新
|
197次组卷
|
5卷引用:沪教版(2020) 选修第一册 精准辅导 第4章 4.4(2)数学归纳法的应用
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2 . 十八世纪的瑞士数学家莱昂哈德∙欧拉普使用过如下级数:
,当
时,可求得
的近似值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26334989e569cadd1c962007cc0f7ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c345907ebe27888332b1b44c666cc47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
A.2.98 | B.2.99 | C.3.00 | D.3.01 |
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3 . 在代数运算中有下列乘法公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02afa7c7ab445f4332b1aa67d00874cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6f5f4ad27d1ca1028de903270ac3b0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3c6199ef03b3c389c4dcf15f48b1bf2.png)
.
(1)观察上述结果,你能做出怎样的猜想?
(2)证明你的猜想,并判断
是否是99的倍数?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02afa7c7ab445f4332b1aa67d00874cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6f5f4ad27d1ca1028de903270ac3b0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3c6199ef03b3c389c4dcf15f48b1bf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adf7616d4e0060ca37d9526f4f17111e.png)
(1)观察上述结果,你能做出怎样的猜想?
(2)证明你的猜想,并判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac869d216f9d7281770cedd34a420d95.png)
您最近一年使用:0次
2021-09-10更新
|
127次组卷
|
2卷引用:河北省保定市易县第三中学2023-2024学年高一上学期收心考试数学试题
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4 . 一个自然数的立方,可以分裂成若干个连续奇数的和.例如:
、
和
分别可以“分裂”成2个、3个和4个连续奇数的和,即
,
,
,…若
也按照此规律来进行“分裂”,则
“分裂”出的奇数中,最小的奇数是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6648bc986a558fa32e752d28d3a68431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c09a0d924acb0b70f5b92b1ef2b6b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69b630bc20f1ca5fd0621ca3d4b1dbf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/430b424bdc195b1dab036779fb956b72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/232f4299d55ea79adf3222d779cc41c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f07dba6451511827fbd4d402e88b71ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3e1e35d057b8c277dbf2f052c4dcfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3e1e35d057b8c277dbf2f052c4dcfb.png)
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5 . 若函数
,且
,则
中,正数的个数是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56a96ea1e1ad835faca39e2d36bd20b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19e3a5fa10e9dcea24efed239e157698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a428ef3e85281532dd71de703448b2d6.png)
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6 . 观察下列各式:
①
;
②
;
③
;
④
;
根据以上规律可得![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e664a652bf2de402d660d001c5186a0.png)
________ .
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd702db3afdd3b59cdd63ce66fe1e0e1.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1c0ab6ef3466eac958b38e7b1cfdb5.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48844b726674a401d1275c127c9802ed.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0471cc197b32144d693c3731218e9cb.png)
根据以上规律可得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e664a652bf2de402d660d001c5186a0.png)
您最近一年使用:0次
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7 . 把数列
的所有数按照从大到小的原则写成如下数表:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f2d42c25db1b6832cb3e4c4935a37b1.png)
第
行有
个数,第
行的第
个数(从左数起)记为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/951fc8c682fd75a8c8329629668fe860.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31735b63a98b9babf437bf6620043d39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f2d42c25db1b6832cb3e4c4935a37b1.png)
第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb478a4519aec71aedec96721956f2ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b4baf6e03589fe63981c48f4a83e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/951fc8c682fd75a8c8329629668fe860.png)
您最近一年使用:0次
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8 . 三角比内容丰富,公式很多,若仔细观察、大胆猜想、科学求证,你也能发现其中的一些奥秘.请你完成以下问题:
(1)计算:
,
,
;
(2)根据(1)的计算结果,请你猜出一个一般的结论用数学式子加以表达,并证明你的结论,写出推理过程.
(1)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83d1f7fc537bbc63cfc8b48d9b8c3a8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b927d30846355b60ae826c196c38aa84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98a196f50db756e8bca365532e62d5c8.png)
(2)根据(1)的计算结果,请你猜出一个一般的结论用数学式子加以表达,并证明你的结论,写出推理过程.
您最近一年使用:0次
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9 . 已知线段
上有
个确定的点(包括端点
与
).现对这些点进行往返标数(从
…进行标数,遇到同方向点不够数时就“调头”往回数).如图:在点
上标
,称为点
,然后从点
开始数到第二个数,标上
,称为点
,再从点
开始数到第三个数,标上
,称为点
(标上数
的点称为点
),……,这样一直继续下去,直到
,
,
,…,
都被标记到点上,则点
上的所有标记的数中,最小的是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d02ea8c4988c5c28ab93f0d70fb55a.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/3c714b3307d93610f074d8d116ee273e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f95463e4696bcb6ed28581bad689d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f95463e4696bcb6ed28581bad689d0c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/0f3acf79-aeb2-4876-9660-ec5388831dc4.png?resizew=264)
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10 . 如图所示,坐标纸上的每个单元格的边长为
,由下往上的六个点:
的横、纵坐标分别对应数列![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
的前
项,如下表所示.
按如此规律下去,请归纳,则
等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a97321c136e0af913c3eb2d52d4492.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fc82353331abee0828dee9b38c08f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da45c443af7994a26ffa9d8894e7262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/438bf1d1a630522f5fe159d365076cfb.png)
![](https://img.xkw.com/dksih/QBM/2020/4/14/2441511376175104/2441553492082688/STEM/4c021f23660442f4a03eeafaa55315cd.png?resizew=163)
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