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解题方法
1 . 已知正实数
满足
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26455f7d37cdd6a390df4b49d9601bc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca35310a128febf44f147d4df340d57a.png)
A.4 | B.6 | C.9 | D.10 |
您最近一年使用:0次
2020-09-09更新
|
216次组卷
|
8卷引用:贵州省黔南州2018-2019学年高一下学期期末数学试题
贵州省黔南州2018-2019学年高一下学期期末数学试题山东省泰安市2019-2020学年高一上学期期末数学试题衔接点19 基本不等式-2020年【衔接教材·暑假作业】初高中衔接数学(新人教版)(已下线)[新教材精创] 2.2基本不等式练习(2) -人教A版高中数学必修第一 册(已下线)2.2.2基本不等式的应用-【新教材】人教A版(2019)高中数学必修第一册同步练习(已下线)【新教材精创】1.3.2 基本不等式 练习(1)-北师大版高中数学必修第一册湖南省株洲市第二中学2022-2023学年高一上学期入学考试数学试题(A卷)(已下线)专题7-2 基本不等式归类-2022年高考数学毕业班二轮热点题型归纳与变式演练(全国通用)
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2 . 已知a,b,c,d∈R,则下列不等式中恒成立的是( )
A.若a>b,c>d,则ac>bd | B.若a>b,则![]() |
C.若a>b>0,则(a﹣b)c>0 | D.若a>b,则a﹣c>b﹣c |
您最近一年使用:0次
2019-09-15更新
|
895次组卷
|
14卷引用:贵州省黔南州2018-2019学年高一下学期期末数学试题
贵州省黔南州2018-2019学年高一下学期期末数学试题【校级联考】福建省三明市三地三校2018-2019学年高一下学期期中联考数学试题安徽省六安市舒城县2018-2019学年高一下学期期末考试数学(文)试题辽宁省阜新市高级中学2019-2020学年高一上学期10月月考数学试题辽宁省朝阳市凌源市联合校2019-2020学年高一上学期期中数学试题江苏省苏州市外国语学校2019-2020学年上学期自主学习检查(一)高二数学(已下线)【新教材精创】2.2.1不等式及其性质练习(2)-人教B版高中数学必修第—册安徽省六安中学2019-2020学年高一下学期期末数学(文)试题黑龙江省龙西北八校联合体2022-2023学年高一上学期第一次月考数学试题天津市武清区杨村第四中学2022-2023学年高一上学期10月月考数学试题(已下线)【新教材精创】2.2.1 不等式及其性质 练习(2)-人教B版高中数学必修第一册福建省福州铜盘中学2023-2024学年高一上学期10月月考数学试题(已下线)天津市南仓中学2023-2024学年高一上学期10月教学质量过程性检测数学试题天津市嘉诚中学2023-2024学年高一上学期第一次月考数学试题
3 . 已知数列
满足
,
,
.
(1)求证数列
是等比数列,并求数列
的通项公式;
(2)设
,数列
的前
项和为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3369ae2337f8d6a049fd8e5a9f313f87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
(1)求证数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c895d4ce5ce82ef9b311b9369b4de11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/017a49f5aebadd0aef6449abb44b8baa.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a823b63d3f6634f0a294bec20aea0.png)
您最近一年使用:0次
4 . 在
中,角
,
,
的对边分别为
,
,
,已知
.
(1)求角
的大小;
(2)若
,求
的面积的最大值.
![](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/d4a3ee883d82bea8e114bcaf6ee2b8e6.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93859d1f7447247abf197a477e51839c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
您最近一年使用:0次
5 . 已知等差数列
的前
项和为
,且
,公差
,
,
,
成等比数列.
(1)求数列
的通项公式;
(2)设
,求数列
的前
项和
.
![](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/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812be9806122241c476ba1db516c4823.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7da2f386b78cdf6489efaa2f5820d3e.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ec386f0f3ddad65efa9fac2d5bc5d0.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)
您最近一年使用:0次
2019-07-25更新
|
1175次组卷
|
2卷引用:贵州省黔南州2018-2019学年高一下学期期末数学试题
6 . 如图,在锐角
中,
,
在边
上,
,
,
的面积为14.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/dc5e0bf9-b8fd-4500-a181-ae6a60edf3d9.png?resizew=131)
(1)求
的值;
(2)求
的长.
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc5df62e8ac9c74a46462519b95479a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72f7d9f5e71bfef8188b1216c1276c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc3814287dbb60d478bffc5366f9928b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/dc5e0bf9-b8fd-4500-a181-ae6a60edf3d9.png?resizew=131)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cb2d186d1502c3b5f43ede09a58a135.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
您最近一年使用:0次
7 . 若变量
,
满足约束条件
则
的最大值为__________ .
![](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/1e0453961285b65d45a1ea3b8ce54767.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f7c99486743e17633d086d868f0680c.png)
您最近一年使用:0次
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8 . 等差数列
中,已知
,
,则
的前
项和
的最小值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b499db552a74e4d609391271dcf72ad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5093b3365cd40952c6e3d9b27b070680.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)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-07-25更新
|
1825次组卷
|
6卷引用:贵州省黔南州2018-2019学年高一下学期期末数学试题
9 . 在
中,角
,
,
的对边分别为
,
,
,已知
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
![](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/fadd2e6f0aa16c2c466c904474ffc79c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5742b2684d00be50a66e01c9acb6b51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e29b822cda1ba926e96368094fa1a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
A.30° | B.45° | C.150° | D.45°或135° |
您最近一年使用:0次
2019-07-25更新
|
590次组卷
|
3卷引用:贵州省黔南州2018-2019学年高一下学期期末数学试题
10 . 已知数列
是等差数列,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30eb42578f654fb61e826026d2199751.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f3fe2adbbd64e85518741c04ff209b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30eb42578f654fb61e826026d2199751.png)
A.18 | B.20 | C.22 | D.24 |
您最近一年使用:0次