1 . 设
是函数
的图象上的任意两点.
为
的中点,
的横坐标为
.
(1)求
的纵坐标.
(2)设
,其中
,求
.
(3)对于(2)中的
,已知
,
其中
,设
为数列
的前
项的和,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4daf40bad1cc89311930cce356672354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2eabd6f2b9add9d973e3c7b004ad11e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9f3cb549a178ba86e08e72ea152b50c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1933b7c3ace69622339353431c519b13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(3)对于(2)中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac7cf140605953920ee42014b6b99626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d836b1e22264166148025623047c86ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1933b7c3ace69622339353431c519b13.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/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
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解题方法
2 . 已知
,则
与
的夹角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/442f872e9e06b515fc6cf35eb199956a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
3 . 已知向量
(1)若
,求角
的集合;
(2)若
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba28fc831fb28ef11b73ec3a4bbf4758.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89879d3524590fe7d253b6e3086de649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79889a063b2c56f4b8bb825949cec057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bba648b28ce3a5048531784efdb8195f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4993f44688c322814b49141a27623e8.png)
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4 . 已知点A(0,1),B(3,2),向量
=(4,3),则向量
=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c436b63e793d6d39990341d29cf47f10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4b62ea9f2ffb1342d9edc22e9649cad.png)
A.(1,2) | B.(-1,-2) | C.(-7,-4) | D.(7,4) |
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5 . △ABC的三内角A,B,C的对边分别为
,且
,设
,
,又△ABC的面积为S,则
与
的关系为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49831fc3ba1db10bcc59d4f9e0298ef0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/052294b7e1874d0f660d8a6ea51123d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29febe61bba33f0a4263b7634d15878c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb74ca8fc86ddef279e33f31c1fedda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
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解题方法
6 . 已知
是等差数列
,则该数列的前10项和
等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba34cc26c4b01284d5698d5a0ae3f331.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3cf6f2bbe20a404fea41a4d2b1c4c7.png)
A.64 | B.100 | C.110 | D.120 |
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7 . 已知数列3,33,333,3333,…则通项![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
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2020-02-14更新
|
298次组卷
|
3卷引用:重庆市江津第六中学2018-2019学年高一下学期期中数学试题
8 . 已知
是等比数列,
是方程
的两根,求
的值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71cc89da69de9df30eac6970dbc90275.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab089e45772782c09c677603aedc21b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d94f27d0a9baf8c63de507b3be6e4c29.png)
A.-10 | B.25 | C.10 | D.20 |
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9 . 等差数列
中
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715aaa320d35fd92b2dcd9573ab8b489.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc077de5c52b0a44b6297de1d0b78a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715aaa320d35fd92b2dcd9573ab8b489.png)
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10 . 已知
是等差数列,且
=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f0fd30ebfa5dc8aaf672123a938b34a.png)
A.46 | B.47 | C.48 | D.56 |
您最近一年使用:0次
2020-02-14更新
|
141次组卷
|
2卷引用:重庆市江津第六中学2018-2019学年高一下学期期中数学试题