1 . 在△
中,点D在
边上,
平分
,
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fffa3d9c32da53b0ea0c338012ea20c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c956ac0eb05cf120e14f17413dfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4db3d5ecdceba51deccbfd2d4f4a97f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
A.2 | B.![]() | C.3 | D.![]() |
您最近一年使用:0次
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解题方法
2 . 设等比数列
的前
项和为
,若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.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/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0547c15cfcf562d4b517f79401269e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42e4487468ab2823d6dbf7f0ebd2eb38.png)
A.![]() | B.8或![]() | C.8或9 | D.![]() ![]() |
您最近一年使用:0次
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解题方法
3 . 设数列
的前
项之积为
,满足
(
),则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76aef4cdcb5af742ce28003b7b6c8c20.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/5949f4a2c72dc07dfb2ba182f674db4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2771c5f04582c545e0f9afc8a2cb9597.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd21f4cb498101d26b4aaa2e1a6addc.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-03-21更新
|
3389次组卷
|
7卷引用:辽宁省丹东市东港市第二中学2024届高三下学期高考热身考试数学试卷
4 . 已知数列
满是
,
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afc289d11d4e48c34874f5ee63e90212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd15336272a0bfbad4cbe768e26921bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/576e6f82d809db1ce12ff4f7f3bd586b.png)
A.![]() | B.![]() | C.16 | D.18 |
您最近一年使用:0次
2024-02-27更新
|
680次组卷
|
3卷引用:辽宁省丹东市凤城市第一中学2023-2024学年高二下学期第一次月考(4月)数学试题
辽宁省丹东市凤城市第一中学2023-2024学年高二下学期第一次月考(4月)数学试题湖南省长沙市第一中学2023-2024学年高二下学期开学自主检测数学试题(已下线)专题3 复杂递推及斐波那契数列相关二阶递推问题【讲】(高二期末压轴专项)
5 . 已知三棱锥
的体积是
是球
的球面上的三个点,且
,
,则球
的表面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4278c0911e7df78965e78cff69cac5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d796e7532b7a6822151abc7334978d1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52336db5fd3f580113d6873a3753a16b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec19432459fc315338518baa5d3dfb88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-02-21更新
|
1724次组卷
|
6卷引用:辽宁省丹东市东港市第二中学2024届高三下学期高考热身考试数学试卷
解题方法
6 . 已知
,且
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a9344f4fca7b9779ca7720e5277ea6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca845954ff04c758d90ce28f4301c615.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cab2caca3d69bb606e7f31d7301d4d1c.png)
A.5 | B.![]() | C.4 | D.![]() |
您最近一年使用:0次
2024-01-21更新
|
883次组卷
|
2卷引用:辽宁省丹东市2023-2024学年高一上学期期末教学质量监测数学试题
7 . 已知
,且
,则下列结论一定正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce613eaa5df46a50174085ef5d1087fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e56f4504e0f80fd031c8b5f41832e03.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
解题方法
8 . 在锐角三角形
中,角A,B,C所对的边分别为a,b,c,且满足
,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1a29fa7c5f6f234c87b18b1de6f336e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7536c692721eda9a76b6dd87cdf634.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
9 . 2022年第二十四届北京冬奥会开幕式上由96片小雪花组成的大雪花惊艳了全世界,数学中也有一朵美丽的雪花——“科赫雪花”.它的绘制规则是:任意画一个正三角形
(图1),并把每一条边三等分,再以中间一段为边向外作正三角形,并把这“中间一段”擦掉,形成雪花曲线
(图2),如此继续下去形成雪花曲线
(图3),直到无穷,形成雪花曲线
.设雪花曲线
的边长为
,边数为
,周长为
,面积为
,若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797e67927616b141ed7c6b83f8b6f4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d14ef74537c2fe3406efd13cb724756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf83e20035c3afd6d26ebfd53d768a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7c5e7bd6bac51402ffa04b4144ec78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
10 . 已知在前
项和为
的等比数列
中,
,则
( )
![](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/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34bd4b4bc308b72e8edeb31ea28b417.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e673c84f9beb0aec99fccc9f0876f0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次