名校
解题方法
1 . 已知函数
.把方程
的正数解从小到大依次排成一列,得到数列
,
.
(1)求数列
的通项公式;
(2)记
,设数列
的前
项和为
,求证
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89556673cb92c044a892f3fbf79f0a6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d19f77669fa0060d1e42fbbcb2ec5042.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cda0c771434b30a909702c34710e89cd.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/e672c3d231081d12e44a4211e5ac60bf.png)
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2 . 已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c9c054fac13474dd60bf87a7795eb49.png)
(1)求
的单调区间;
(2)求证曲线
在
上不存在斜率为-2的切线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c9c054fac13474dd60bf87a7795eb49.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求证曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f00f2f6ab162f9333ec55db195d663b.png)
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2021-05-20更新
|
653次组卷
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5卷引用:甘肃省平凉市华亭市第一中学2023-2024学年高三上学期第三次月考数学试卷
甘肃省平凉市华亭市第一中学2023-2024学年高三上学期第三次月考数学试卷北京市八一学校2022届高三10月月考数学试题河南省重点高中2021-2022学年高三下学期阶段性调研联考二文科数学试题河南省郑州市2021届高三三模文科数学试题(已下线)专题02 导数及其应用【知识梳理】-2020-2021学年高二数学下学期期末专项复习(新人教B版2019)
2021·全国·模拟预测
3 . 已知
的内角A,B,C的对边分别为a,b,c,且
.
(1)证明:
是等腰三角形;
(2)若
的面积为
,且
,求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f585eb57133ed50fdffac8ac0be102.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24c14ff9b66f21c05e52dc3c8908c2df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f74632cfc1a161e444040355e7395444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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名校
4 . 设
,
,
,
.
(1)若
.求证:
;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23241b8f108df2ebb858c6ab622db460.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0de8c22ce620754b9f9343a24538c63a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/635c56ef1f2682ecf4daa8510b266de4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358095195388d7d2db515d917351e255.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ca3c4f4fddffde87452df1f56805cd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52b6fc7e4e457a179af628d22d7b1dff.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c531b28dd7ab93b62ca294da8d286a0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25479a15fab65f88a0a66931b3d5c2e.png)
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2020-07-22更新
|
412次组卷
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6卷引用:甘肃省武威市武威第一中学2020年高三上学期11月月考数学(理)试题
名校
解题方法
5 . 四棱锥
中,底面
为矩形,侧面
底面
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2016/11/3/1573116724396032/1573116730736640/STEM/8eb3c96cf10e45b9a7bc05d9bda93649.png?resizew=160)
(1)证明:
;
(2)设
与平面
所成的角为
,求二面角
的余弦值的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5164a3cc47e266446d49127e2ef10c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d79e7020414add95907e061df505ef0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://img.xkw.com/dksih/QBM/2016/11/3/1573116724396032/1573116730736640/STEM/8eb3c96cf10e45b9a7bc05d9bda93649.png?resizew=160)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ccd5c41c921836b50f8e18abfdc5df3.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bef835f948e9ab2e57b0f34ec7f05213.png)
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2020-10-18更新
|
1338次组卷
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3卷引用:甘肃省兰州大学附属中学2021-2022学年高三上学期第三次月考理科数学试题
6 . 若
.求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58dba6992c875e027c179b6864325d11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/040b0039b63dd1ce6ffcf5ca2e96287a.png)
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2019-06-19更新
|
246次组卷
|
2卷引用:甘肃省天水市第一中学2018-2019学年高一下学期第二次段考数学(文)试题
名校
7 . 在△ABC中,
(1)求证:cos2
+cos2
=1;
(2)若cos(
+A)sin(
π+B)tan(C﹣π)<0,求证:△ABC为钝角三角形.
(1)求证:cos2
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8c9909ad25edf40b38392675567d472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eac5a0b4af9cbbe7c6a0b49e809416c.png)
(2)若cos(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de12bbd5097debc83d6a46364589748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/103070abee09399f1e9510a75c3ba9e8.png)
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2018-11-03更新
|
506次组卷
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8卷引用:甘肃省兰州市第一中学2019-2020学年高一4月月考数学试题
甘肃省兰州市第一中学2019-2020学年高一4月月考数学试题【全国百强校】西藏林芝一中2019届高三上学期第二次月考数学(理)试题福建省莆田擢英中学2023-2024学年高一上学期12月月考数学试卷人教A版(2019) 必修第一册 突围者 第五章 易错疑难集训(二)(已下线)专题4.2 同角三角函数的基本关系与诱导公式(精练)-2021年高考数学(理)一轮复习学与练(已下线)专题11.1 余弦定理(基础练)-2020-2021学年高一数学十分钟同步课堂专练(苏教版2019必修第二册)(已下线)专题11.1 余弦定理(重点练)-2020-2021学年高一数学十分钟同步课堂专练(苏教版2019必修第二册)湘教版(2019) 必修第一册 突围者 第5章 易错疑难集训二
名校
8 . 中国古代三国时期的数学家赵爽,创作了一幅“勾股弦方图”,通过数形结合,给出了勾股定理的详细证明.如图所示,在“勾股弦方图”中,以弦为边长得到的正方形
是由4个全等的直角三角形和中间的小正方形组成,这一图形被称作“赵爽弦图”.若正方形
与正方形
的面积分别为25和1,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a003bc7c15368bdf7749fd8a32d3e7c.png)
![](https://img.xkw.com/dksih/QBM/2018/3/18/1904933540167680/1905563173584896/STEM/b02aed124d104505b91024967356c14a.png?resizew=185)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a003bc7c15368bdf7749fd8a32d3e7c.png)
![](https://img.xkw.com/dksih/QBM/2018/3/18/1904933540167680/1905563173584896/STEM/b02aed124d104505b91024967356c14a.png?resizew=185)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-03-19更新
|
475次组卷
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7卷引用:甘肃省张掖市某重点校2022-2023学年高三上学期第九次检测数学(理)试题
甘肃省张掖市某重点校2022-2023学年高三上学期第九次检测数学(理)试题甘肃省2018届高三第一次诊断性考试数学(文科)试题甘肃省2018届高三第一次高考诊断性考试数学(文)试题安徽省滁州市定远县育才学校2020-2021学年高三上学期第一次月考数学(文)试题(已下线)2019年一轮复习讲练测【新课标版理】4.7 正弦定理和余弦定理的应用【练】(已下线)2019年一轮复习讲练测【新课标版文】4.7 正弦定理和余弦定理的应用【练】(已下线)2019年一轮复习讲练测 4.7 解三角形及其应用举例【浙江版】 【练】
9 . 已知
,
(1)求函数
的单调递增区间;
(2)设
的内角
满足
,而
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c20acf30287bc10566ec41e68748da8.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360b25bb26627cd568977ee81d97fe36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/361b06700a30635c5a9ac95209bbfeeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f751d18645f7e34110e7591b6f942760.png)
您最近一年使用:0次
2017-10-14更新
|
896次组卷
|
5卷引用:甘肃省兰州市西北师范大学附属中学高三2018级一调理科数学试卷
11-12高三下·上海·开学考试
名校
10 . 已知
中,三个内角
、
、
的对边分别是
、
、
,其中
,且
.
(1)求证:
是直角三角形;
(2)设圆
过
、
、
三点,点
位于劣弧上
,
.求四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/b6d39e8c6fc9149d6290c493a65bdc53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa171ccbdd48673be1713e67fb130e7.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)设圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e12bfde565540f059dd27ea47dfaa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b027ed57b9c6f24e27ec0ae282c76efa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/10/65ed77cf-6ea3-4443-83da-cd615194c0f9.png?resizew=206)
您最近一年使用:0次
2017-04-21更新
|
422次组卷
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3卷引用:甘肃省天水市第一中学2018届高三上学期第三阶段考试数学试题