名校
解题方法
1 . 在
中,内角
,
,
的对边分别为
,
,
,
.
(1)若
,证明:
;
(2)若
,求
周长的最大值.
![](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/e899c486dc49e560fc4aca05e16835b7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe29c42302504e7fd8577dbc7d130ac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5fa7ae9c8b4b3c7d57315ac806bd2e8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2024-03-07更新
|
2361次组卷
|
9卷引用:甘肃省兰州第一中学2023-2024学年高一下学期3月月考数学试题
甘肃省兰州第一中学2023-2024学年高一下学期3月月考数学试题广东省南粤名校联考2024届高三2月普通高中学科综合素养评价数学试题河北省廊坊市文安县第一中学2023-2024学年高一下学期第一次集中练(3月月考)数学试题陕西省咸阳市武功县普集高级中学2023-2024学年高一下学期第1次月考数学试题山东省枣庄市滕州市第一中学2023-2024学年高一下学期3月单元过关考试(月考)数学试卷上海市奉贤中学2023-2024学年高一下学期3月月考数学试卷广西南宁市第三十三中学2023-2024学年高一下学期3月月考数学试卷广西防城港高级中学2023-2024学年高一下学期4月月考数学试题黑龙江省哈尔滨市第二十四中学校2023-2024学年高一下学期4月月考数学试题
名校
解题方法
2 . 函数
的部分图象如图所示.
![](https://img.xkw.com/dksih/QBM/2021/10/21/2834230574768128/2834301581647872/STEM/4f935862-77aa-44a7-9f83-2fd8ca04f0ef.png?resizew=177)
(1)求函数
的解析式;
(2)已知数列
满足
,且
是
与
的等差中项,
①求证:数列
是等比数列;
②求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f27cd15ee656d39a864fbecf781f23c5.png)
![](https://img.xkw.com/dksih/QBM/2021/10/21/2834230574768128/2834301581647872/STEM/4f935862-77aa-44a7-9f83-2fd8ca04f0ef.png?resizew=177)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)已知数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090426eb29836bc30c006b3739c08057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95d10a513447f40b5130c7527ae289b2.png)
①求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d17d72d1d20d385920c3d9da6bed8bb.png)
②求数列
![](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)
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2021-10-21更新
|
333次组卷
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2卷引用:甘肃省兰州市第一中学2021-2022学年高三上学期第一次月考(10月)数学(文)试题
名校
解题方法
3 . 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)
您最近一年使用:0次
名校
解题方法
4 . 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)
您最近一年使用:0次
2020-10-18更新
|
1338次组卷
|
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
名校
5 . 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)
您最近一年使用:0次
2018-11-03更新
|
506次组卷
|
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
6 . 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
|
895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