1 . 已知数列
的前n项和为
,且
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e31fb9cdc11d44c3dcab0488366ad458.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6691617159667fcfc3f6ce9146cd075a.png)
A.当![]() ![]() | B.![]() |
C.数列![]() ![]() | D.当![]() ![]() |
您最近一年使用:0次
名校
2 . 设等比数列
的公比为
,前
项积为
,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
您最近一年使用:0次
2024-02-06更新
|
912次组卷
|
4卷引用:湖南省长沙市2024届高三上学期新高考适应性考试数学试卷
名校
解题方法
3 . 若
的三个内角
的正弦值为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f001e7fe403a720a44ba6c2d0cab99ec.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
您最近一年使用:0次
2024-01-18更新
|
1150次组卷
|
5卷引用:广东省肇庆市2024届高三第二次教学质量检测数学试题
广东省肇庆市2024届高三第二次教学质量检测数学试题江西省南昌市第二中学2024届高三“九省联考”考后适应性测试数学试题(三)广东省广州市执信中学2024届高三上学期元月阶段测试数学试题(已下线)热点3-3 正弦定理与余弦定理(8题型+满分技巧+限时检测)河南省信阳市信阳高级中学2024届高三高考模拟(十)(3月月考)数学试题
4 . 已知数列
,现在对该数列进行一种变换,规则
每个0都变为“
”,每个1都变为“
”,得到一个新数列,记数列
,且
的所有项的和为
,则以下判断正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0386aa1cce19b412747b4459394658fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3c6760835922213633a6f612a7bf605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/823b15e6dc9fce202c3c57e7d18df0f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f32df58be46198b2e7a112ed255d8bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/247b6beb51e8a29ae55a22fa33c70cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc31dcdb99754fc452ff2b92a2fb8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
A.![]() ![]() | B.![]() |
C.![]() ![]() | D.![]() |
您最近一年使用:0次
2024-01-16更新
|
848次组卷
|
2卷引用:2024届高三新改革适应性模拟测试数学试卷一(九省联考题型)
名校
解题方法
5 . 已知
是等比数列,
是其前n项和,满足
,则下列说法中正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48bf2138c305e7d3ab3c2999eec10c60.png)
A.若![]() ![]() |
B.![]() ![]() ![]() |
C.若存在![]() ![]() ![]() ![]() |
D.若存在![]() ![]() ![]() ![]() |
您最近一年使用:0次
2024-01-12更新
|
1106次组卷
|
5卷引用:江西省赣州市南康中学2024届高三上学期七省联考考前数学猜题卷(六)
名校
解题方法
6 . 在新农村建设中,某村准备将如图所示的
内区域规划为村民休闲中心,其中
区域设计为人工湖(点D在
的内部),
区域则设计为公园,种植各类花草.现打算在
,
上分别选一处E,F,修建一条贯穿两区域的直路
,供汽车通过,设
与直路
的交点为P,现已知
米,
,
,
米,
,
段的修路成本分别为100万元/百米,50万元/百米,设
,修路总费用为关于
的函数
,(单位万元),则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5157b42da58d55daad27d98b2fec15ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4189a0821a0ffab9dc171ecd279ba442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfaa4beac0c303da8ea298b7effce1fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9680bd6f250acb8b568510419b59d3e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731ac94d7d7af196a74d9aa5021cbb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21f808404463c108bea981ca900c15a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc513822ba6e34a16a468450ce282b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fd7229922fbb3ce09dada883f74fbb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/9/1cd1ff9d-c7c2-4923-9423-6afae63f97dd.png?resizew=199)
A.![]() | B.![]() |
C.修路总费用最少要400万元 | D.当修路总费用最少时,![]() |
您最近一年使用:0次
2024-01-07更新
|
535次组卷
|
3卷引用:2024年普通高等学校招生全国统一考试模拟试题数学试题(一)
2024年普通高等学校招生全国统一考试模拟试题数学试题(一)广东省珠海市第一中学2024届高三上学期期末模拟数学试题(三)(已下线)6.4.3 第3课时 余弦定理、正弦定理应用举例【第三练】“上好三节课,做好三套题“高中数学素养晋级之路
名校
解题方法
7 . 在边长为2的等边三角形
纸片中,取边
的中点
,在该纸片中剪去以
为斜边的等腰直角三角形
得到新的纸片
,再取
的中点
,在纸片
中剪去以
为斜边的等腰直角三角形
得到新的纸片
,以此类推得到纸片
,
,……,
,……,设
的周长为
,面积为
,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/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46643f7044c9237ccbd3324901d5a51e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/694256e3937fa2df5ca845b751ede660.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e029cc1f7d07eeb136bd3946a7eb23e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77bb70cbcec294e75f05a57ed432ef98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df1d9b712b639c8b6809c9f3ae03706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e029cc1f7d07eeb136bd3946a7eb23e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dedd84baa5219a2af415be51947c301.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/801ad12c97ed33abddfa1be86e2ff533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32410867843f1a7ef11410da8f3f8dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b994a3d0126e44d032969365e6ebc25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba58141e798bdd957bbd9c9c30337350.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aae6358af7332d7609bf8d18467487d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aae6358af7332d7609bf8d18467487d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5a2d3cd8e283ae9d04bee5ab2e0895b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-12-23更新
|
637次组卷
|
2卷引用:江西省南昌市第二中学2024届高三“九省联考”考后适应性测试数学试题(二)
解题方法
8 . 已知等差数列
的前n项和为
,等比数列
的前n项和为
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
A.若![]() ![]() |
B.![]() ![]() ![]() |
C.![]() ![]() ![]() |
D.若![]() ![]() ![]() |
您最近一年使用:0次
名校
9 . 1889年瑞典的阿伦尼乌斯提出了阿伦尼乌斯公式:
(
和
均为大于0的常数),
为反应速率常数(与反应速率成正比),
为热力学温度(
),在同一个化学反应过程中
为大于0的定值.已知对于某一化学反应,若热力学温度分别为
和
时,反应速率常数分别为
和
(此过程中
,
与
的值保持不变),则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd97cbdff30dce1a4419c56bbb9cbed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/094f977194228bed828f3507f5898934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe86722368bfcb473b7fbfa20053de93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9a724b59c890095baa5cb73e267c44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9275bd8ce17fcc4a786510b008414ab0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe86722368bfcb473b7fbfa20053de93.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() |
您最近一年使用:0次
2023·全国·模拟预测
名校
解题方法
10 . 已知实数
,
,
满足
,
,则下列结论中正确的是( )
![](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/c500792845f2ac2d64fab598ae42761f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a494f98b744e12efef783c228b5a3f72.png)
A.当![]() ![]() | B.实数![]() ![]() |
C.![]() | D.实数![]() ![]() |
您最近一年使用:0次