名校
1 . 在
中,角
,
,
所对的边分别是
,
,
,且
.
(1)求
的值;
(2)若
的面积为
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f72afede5c2034a65d0b9c129de0a8f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a24a8f5e8fb89381f8add6549170345.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2e8368a019595201123e4738e666273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2018-04-27更新
|
4009次组卷
|
4卷引用:新疆乌鲁木齐市2018届高三第三次诊断性测验数学理科卷
新疆乌鲁木齐市2018届高三第三次诊断性测验数学理科卷(已下线)2017-2018学年度下学期高中期末备考 【浙江版】高一【精准复习模拟题】 基础卷01【教师版】新疆伊犁州奎屯一中 2018-2019学年高一(下))第二次月考数学试卷(理科)贵州省铜仁市伟才学校2019-2020学年高一下学期期中考试数学试题
2 . 设正项数列
的前
项和为
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778dc8fa2140878bf8670bf79c01a39a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/658a256405c020e53be4b7699f9c6890.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2864e2ec3416cc4c081ac1f71a0af.png)
您最近一年使用:0次
名校
3 . 设
,
满足
,则
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b612b6e7b58a118f1172c31befb6051.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75407f5349719aba26f58213459793eb.png)
您最近一年使用:0次
2018-04-27更新
|
648次组卷
|
3卷引用:新疆乌鲁木齐市2018届高三第三次诊断性测验数学理科卷
解题方法
4 . 设数列
是等差数列,数列
是各项都为正数的等比数列,且
,
.
(1)求数列
,
的通项公式;
(2)设
,数列
的前
项和为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f5020e4540cef662abef72e1d08c38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892bb9828a2f7beb4b024d4cd254f414.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9221c0c92a526f65533cdc5400767af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c88a7ef007c78a93e33bd77c4396626.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/9e0328818b6f0f71fd2f0e569b87838e.png)
您最近一年使用:0次
2018-04-05更新
|
991次组卷
|
2卷引用:新疆乌鲁木齐市2018届高三第二次质量监测文科数学试题
5 . 在
中,
,
为
中点,
,则
面积的最大值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb08f6a798dc293f3d8de281190f65e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
您最近一年使用:0次
名校
解题方法
6 . 在△
中,角
的对边分别为
,已知
.
(1)求证:
;
(2)若△
的面积为
,求
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90245daadce4a784a507430a3d07ddfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff0f5f508629d717f5576128ca84cdec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24db09e56b38eefebf1e98662cc07f75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/604f055933d194073837259851c2fa48.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70afa75683b04378f4e0358ef75e9510.png)
(2)若△
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90245daadce4a784a507430a3d07ddfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78f83f941335a74acad673209405ad05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c14c6709d2a04863cacdee618b20613e.png)
您最近一年使用:0次
2018-04-05更新
|
968次组卷
|
8卷引用:新疆乌鲁木齐市2018年高三年级第二次质量监测理科数学
新疆乌鲁木齐市2018年高三年级第二次质量监测理科数学(已下线)2018年5月28日 押高考数学第17题(2)——《每日一题》2018年高三文科数学四轮复习(已下线)2018年5月28日 押高考数学第17题(2)——《每日一题》2018年高三理科数学四轮复习【全国百强校】辽宁省实验中学2017-2018学年高一下学期期中考试数学试题【校级联考】江西省重点中学余干中学、上饶县中学2018-2019学年高二上学期第一次联考数学(文)试题(已下线)2019年5月27日 《每日一题》(理数)四轮复习—— 押高考数学第17题(2)(已下线)2019年5月27日 《每日一题》(文数)四轮复习—— 押高考数学第17题(2)山西省晋中市平遥二中2018-2019学年高一下学期期中数学试题
解题方法
7 . 把函数
所有的零点按从小到大的顺序排列,构成数列
,数列
满足
,则数列
的前
项和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7978d7bd6f6caf9ac9837ffce5f89654.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7daa932a5dd7344799f163943208565e.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/357cf82e1f23d4ce922990a6343407ef.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/7978d7bd6f6caf9ac9837ffce5f89654.png)
您最近一年使用:0次
名校
8 . 设等差数列
的前
项和为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ce44cdc798888e0920e0441deadd255.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.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/8ce2840166f095af54eb936a1030a944.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ce44cdc798888e0920e0441deadd255.png)
A.2 | B.![]() | C.4 | D.![]() |
您最近一年使用:0次
2018-04-05更新
|
1077次组卷
|
2卷引用:新疆乌鲁木齐市2018年高三年级第二次质量监测理科数学
9 . 在
中,角
的对边分别为
,若
成等比数列,
,则
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faa84d05bf5b11896604a52f1e61c0c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3371592e18d2764183bd1f04874f55fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12b71412b011d5639712ee97312c7aad.png)
您最近一年使用:0次
10 . 已知
是等差数列,且
,
;数列
满足:
.
(Ⅰ)求数列
的通项公式;
(Ⅱ)设数列
的前
项和为
,若
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6c0df1b47f475ab13008fbadcbeef6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d14134a576864542da2a255de42131a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ddc54d2a83cb01bd28af59165d0af93.png)
(Ⅰ)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(Ⅱ)设数列
![](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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b980619aaa3fc711b73e9749c3161c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
2018-03-24更新
|
1381次组卷
|
3卷引用:新疆维吾尔自治区乌鲁木齐地区2018届高三下学期第二次诊断性测验数学(文)试题