名校
1 . 设
,
,在
,
,…,
中,正数的个数是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e75f41eb0f067976769d085ce99368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0ca3befd6622638091e99d273129d0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a27c112387e56c976489fa484c0d48f.png)
A.15 | B.16 | C.18 | D.20 |
您最近一年使用:0次
2019-12-12更新
|
445次组卷
|
2卷引用:上海市交大附中2018-2019学年高一下学期期末数学试题
名校
2 . 设
,数列
满足
,
,将数列
的前100项从大到小排列得到数列
,若
,则k的值为______ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fab51121848ce166035ceab6f4e00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65f37aff5e7a60c1d921b58b30d2d437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc631d51fcb8adfef863d79c7af51098.png)
您最近一年使用:0次
名校
解题方法
3 . 等差数列
,等比数列
,
,
,如果
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64b5813774a10b78606c431d072041a1.png)
(1)求
的通项公式
(2)
,求
的最大项的值
(3)将
化简,表示为关于
的函数解析式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c2477cacc457c3403f67626be4f37f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64baa3a154f39b9e81dd8eeac0508ffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64b5813774a10b78606c431d072041a1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9221c0c92a526f65533cdc5400767af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
(3)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a75932953aadaf475ab781414a4b6fa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4fc8faefb26b233d4aa9dbef043aae.png)
您最近一年使用:0次
2019-12-11更新
|
532次组卷
|
2卷引用:上海市嘉定区2018-2019学年高一下学期期末数学试题
19-20高三上·上海浦东新·阶段练习
名校
4 . 设函数
的定义域为
,满足
,且当
时,
,若对任意
,都有
,则
的最大值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cebfc4f151436fcdc84df9edbd789320.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcac1e85463a3177f487d896b3d1d24c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e78e89bf3b88c415496c232017f33196.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b9849dc6798e2c2ec12730b92117e77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27a03a6834b3c64deeebd0fc220c88f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
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5 . 已知实数a,b,c成等差数列,点
在直线
(a,b不全为0)上的射影是M,若点
的坐标是
,则线段MN的长度的最大值是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceedf87a373e2f1dd3537b6a32cedd18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f6e1f67dc15c3cf135a78af95c70fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e4a31520b40dce41e7a3e706a54ef55.png)
您最近一年使用:0次
名校
解题方法
6 . 定义运算“
”:对于任意
,
(等式的右边是通常的加减乘运算).若数列
的前n项和为
,且
对任意
都成立.
(1)求
的值,并推导出用
表示
的解析式;
(2)若
,令
,证明数列
是等差数列;
(3)若
,令
,数列
满足
,求正实数b的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c3c2f679d53b91088ba6eb14c16cbc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcbca3478eae63853d2aab5332e2e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d0cb5dac9196992cf182b6aed7665ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85356def2f46f6f720170c54448b032c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7230de53663c75658c58bbf206a0085.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12c0a254b15b23157fd1cf23fd0a7ade.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecdc78c604b10eba14ae694c84921076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42b2ae419716617e638c67181b4d4ec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bc482bac44cc0d0ca169d82b65df130.png)
您最近一年使用:0次
名校
7 . (1)已知数列
的通项公式:
,试求
最大项的值;
(2)记
,且满足(1),若
成等比数列,求p的值;
(3)如果
,
,
,且p是满足(2)的正常数,试证:对于任意自然数n,或者都满足
,
,或者都满足
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c88555de2786c301cc6b80ea2bdf804.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636d91e02217d7f816df67bcb52603b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b6d5f1092725deca62cda07176dfad.png)
(3)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2a2df9e31c118e41741693e25bcfe6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a76d202cd606e99aac7eb6a55b800aff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09bf2c8f2070665177c91fd691f7edc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75368dcc2f722ca51745f9f8e2f6df45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d341f6ec7afd35b0d75f509ab8428a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e36212f055ea05952133566ecc2f61c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfbb571b0f69b0daaf02e8e900a7a083.png)
您最近一年使用:0次
8 . 设
为等差数列
的公差,数列
的前
项和
,满足
(
),且
,若实数
(
,
),则称
具有性质
,若
是数列
的前
项和,对任意的
,
都具有性质
,则所有满足条件的
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4be36d1bd6c5e554e54043447e49ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ab958eede2dbad749ba70bb230c88fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81d3037e0651797f5e8fc7d93be7659b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b10dcb965b619c7fb5025b5083e0a364.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09659bc38dd8ea03bcd91fdfe7907ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/835c74bbb8c61dd2d2f008664a8c8810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf99487d7860d017c0747ff966edfd77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87bd7d18f67e90a7c37fad4252e43c9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eded65284816fdf6bf335b0c2a78e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ab958eede2dbad749ba70bb230c88fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87841b7c069b5146a97c5b6d422e7fa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf99487d7860d017c0747ff966edfd77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
9 . 已知数列
满足:
.
(1)若
,求数列
的通项公式;
(2)设数列
的前
项和为
,且
试确定
的值,使得数列
为等差数列;
(3)将数列
中的部分项按原来顺序构成新数列
,且
,求证:存在无数个满足条件的无穷等比数列
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfd81717f6a7e21a6873d64b28c4ee74.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/775afce42fcd27c6b0fd37d1bf0763b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b783cf91e34e692ce8e171f0965cb53f.png)
(2)设数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.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/c69e52de7099e06f5bdfb228222fa4d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b715e7842b95f654f16056a7c7f2abe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(3)将数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff77eb333a1ab7168ef6db86b7b0a203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07406516c9cbed73d1b88a5f1c17e839.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
您最近一年使用:0次
10 . 我们把一系列向量
按次序排成一列,称之为向量列,记作
.已知向量列
满足
且
.
(1)证明数列
是等比数列;
(2)求
间的夹角
;
(3)设
,问数列
中是否存在最小项?若存在,求出最小项;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba3480f4519592f36653efa82e843c23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c01e20988b08e909580872dec6ec7628.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c01e20988b08e909580872dec6ec7628.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48e2aac6c6db191cf2ef2b41222c1dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7758a2615844805829917f29f6540cee.png)
(1)证明数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8885001f6b103a19c190db90c34e1343.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69652a96e0481201484ae6bad78a4497.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92ffa8be5a02790c6161c56b8e90db64.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1873dd08a3c00e04b0b76154f98dc5f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
您最近一年使用:0次