1 . 对于一组向量
,令
,如果存在
,使得
,那么称
是该向量组的“
向量”;
(1)设
,若
是向量组
,
,
的“
向量”,求
的范围;
(2)若
,向量组
是否存在“
向量”?给出你的结论并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a491c1b5eafcd0d95d02aa5eb4d91d4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a589d1b2b9d250c545d81abd0282699a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2042b3ccbc7fe7e094e75925441b93a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752ed927125e4a75ae7c007db9c59683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b71760f71b439f7d3cba6429f1bc4cfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f87205aa6d6957560ada66275a40c918.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cde8b12aa232eeccc1e7ad1cc6d417c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d970a4c8abf3fe4da3382206086a6cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2bc63bd663aed17c3b584ec105b7b18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cde8b12aa232eeccc1e7ad1cc6d417c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3de4e690c4709e8c4584560452fb082b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a491c1b5eafcd0d95d02aa5eb4d91d4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
您最近一年使用:0次
名校
2 . 数列
满足
,
,令
,
是公比为
的等比数列,设
;
(1)求证:
;
(2)设
的前
项和为
,求
的值.
![](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/b5f21c9c920ec8bc13650e9b2f455290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b35b20d625d7ec24531a0a6619f7683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aaab013c25b014549fd0675c2b34df1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08bfa34227466fb549909225dcb5b737.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93951dc25e33527a2390d97397ba724a.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.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/c9427914c98562a61b947f58dae6120d.png)
您最近一年使用:0次
3 . 已知无穷数列
满足
(
).其中
均为非负实数且不同时为0.
(1)若
,且
,求
的值;
(2)若
,
,求数列
的前
项和
;
(3)若
,
,求证:当
时,数列
是单调递减数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3659e090865f9763677c7351b2f28fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd5371a6f0f82c65dd22f75f8b807c1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaffec44406a4313cacb06a7b56b904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c98d10092efc21e76783c0cd5fb5ad38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6065aaa8f3f103d1bc960da8318ce35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/085b7f021a79ec95dac1f7b56769774e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa9bf65189dfb57a61644a1cb27f361.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f6c2c571ce7e333bc0251bc2c1af538.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
您最近一年使用:0次
4 . 已知无穷数列
满足
(
).其中
均为非负实数且不同时为0.
(1)若
,且
,求
的值;
(2)若
,
,求数列
的前
项和
;
(3)若
,
,且
是单调递减数列,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3659e090865f9763677c7351b2f28fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd5371a6f0f82c65dd22f75f8b807c1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaffec44406a4313cacb06a7b56b904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c98d10092efc21e76783c0cd5fb5ad38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6065aaa8f3f103d1bc960da8318ce35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/085b7f021a79ec95dac1f7b56769774e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa9bf65189dfb57a61644a1cb27f361.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
您最近一年使用:0次
名校
5 . 已知递增的等差数列{an}的首项a1=1,且a1、a2、a4成等比数列.
(1)求数列{an}的通项公式an;
(2)设数列{cn}对任意n∈N*,都有
+…+
=an+1成立,求c1+c2+…+c2014的值
(3)若bn=
(n∈N*),求证:数列{bn}中的任意一项总可以表示成其他两项之积.
(1)求数列{an}的通项公式an;
(2)设数列{cn}对任意n∈N*,都有
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31451cd32725ea067ca65f8919748a1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7df63be4f44032b7c7b2716cb5cbd3.png)
(3)若bn=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ed9925a0e08120e9d2d7846cbc45bc5.png)
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6 . 已知复数
满足
,
(1)求证:
为定值;
(2)设
,
,若
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adcc78b50e4eb2ef6076b0ef4fab732d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1310103b6935bc992ac30b00cda97adf.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b49230293fc7eda13ab280119d6b1ad.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eff2707254692b4ab7faca11828f93d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b601de9915320fa77de042dbaa08534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3db7332ccd03b5feeda9af8186677b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a09adbb736002c9c2022f83d55600cd.png)
您最近一年使用:0次
名校
7 . 浦东新区某镇投入资金进行生态环境建设,2017年度计划投入800万元,以后每年投入将比上一年减少
,今年该镇旅游收入估计500万元,由于该项建设对旅游的促进作用,预计今后的旅游收入每年会比上一年增加
;
(1)设
年内(今年为第一年)总投入为
万元,旅游总收入为
万元,写出
的表达式;
(2)至少经过几年,旅游业的总收入才能超过总投入.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ffd5c35bba71ea54c28622b6cf505d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.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/a55e03428497ac0ea2aa80fe5bdcd939.png)
(2)至少经过几年,旅游业的总收入才能超过总投入.
您最近一年使用:0次
名校
8 . 将数列
中的所有项按第一行排3项,以下每一行比上一行多一项的规则排成如下数表:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20488a7619e4a50625983b83e38575df.png)
……
记表中的第一列数
,
,
,…,构成数列
.
(1)设
,求m的值;
(2)若
,对于任何
,都有
,且
.求数列
的通项公式.
(3)对于(2)中的数列
,若上表中每一行的数按从左到右的顺序均构成公比为q(
)的等比数列,且
,求上表中第k(
)行所有项的和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20488a7619e4a50625983b83e38575df.png)
……
记表中的第一列数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7da2f386b78cdf6489efaa2f5820d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed40f06a45869a06a3dc33a55f096ca7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd6c97d2ee3e74ba5730f1cbcc1d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af0dd3fb6af23def773e1b0032a4f3c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e147de39d53b9d4b00afa46672ef980.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(3)对于(2)中的数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71acdb04454c77e1e25ad4f336cccfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194480253da4a3747297bce4d4a63f7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46b6d151d3f864bae873987f6db9327a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8bfd47b7c68564110c720e9246a02ff.png)
您最近一年使用:0次
16-17高二上·上海浦东新·阶段练习
名校
9 . 已知
中,边
,
,令
,
,
,过
边上一点
(异于端点)引边
的垂线
,垂足为
,再由
引边
的垂线
,垂足为
,又由
引边
的垂线
,垂足为
,同样的操作连续进行,得到点列
、
、
,设
(
);
(1)求
;
(2)结论“
”是否正确?请说明理由;
(3)若对于任意
,不等式
恒成立,求
的取值范围;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd2981bf2261343f905ec1b5355a3c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91934cac6477909cf68ec266f562a397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb8015df9744ca1df1f736a1ce20b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6942bd9fc5d090de0cfad7022aa32f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84cc63e33fe47da2704cff57d148dde0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26a531af61ad37ca9cdeaf1eedfda78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82482c50f0eb9786dcaf880fbd7c24f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a86380a6d6501f6504dcb4aa5e3099f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a86380a6d6501f6504dcb4aa5e3099f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79149897b57cd6110c8c81aeae15a250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efc18a5bb2e53586331b2a58538a48b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efc18a5bb2e53586331b2a58538a48b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb873ff9199e6bc63ce81f5c93cb5e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c5a325806df1a1c3e7ce609fe99085f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21c72eb6ab46e9f3ffe71cdf050e5666.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13f9aa012feb435f6b8b14db70ac8400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a49a3f18e8504143acab05588577bb2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc3e537caab9de2656a0c7308f6560a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de79bc7c55e83d9b290fc2a56c5f67da.png)
(2)结论“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c4f3f35d69de15ba8bc0c846a66a61d.png)
(3)若对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee972df83b3d2a8e6e06eb2191aa593e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c7eb49a823f757461cd5260757b088.png)
您最近一年使用:0次
10 . 已知等差数列
的通项公式为
,且
分别是等比数列
的第二项和第三项,设数列
满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
,
的前
项和为
.
(1)求数列
的通项公式;
(2)是否存在
,使得
,并说明理由
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/478f031511d7801f977850f8ab73a747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbd8e16b5cce392a12326fa2f3ee9acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e45bcd8f6ede8cc2513ad41402f40086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d90dc9b1ae59c91973a5e45bce7bfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0c73a1455fc61a2239cb62de1f3c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c491760003a7c1ff4e37b1204a399e4d.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a3f1f8813adcedd56b471961b2ad6a6.png)
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