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解题方法
1 . 意大利著名数学家斐波那契在研究兔子的繁殖问题时,发现有这样的一列数:1,1,2,3,5,8,13,21,….该数列的特点如下:前两个数均为1,从第三个数起,每一个数都等于它前面两个数的和.人们把这样的一列数组成的数列称为斐波那契数列,若用
表示斐波那契数列的第
项,则数列
满足:
,
.则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e7da46fe6aa04c5cd29800addb2e090.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfbc6e2515ed5cf9482cd3094b9de0d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12b290971efaf65804cc756c038c43fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/183ba15a2aae79c4079fe59e248918be.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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2 . 已知数列
满足:
,其中
,下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/457877a6d764f8f5c58ba60f45f0eb12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b8e5990ef4ef314941a3154457a9d4.png)
A.当![]() ![]() ![]() |
B.当![]() ![]() |
C.当![]() ![]() ![]() |
D.当![]() ![]() ![]() |
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3 . 对于正整数n,
是小于或等于n的正整数中与n互质的数的数目.函数
以其首名研究者欧拉命名,称为欧拉函数,例如
(
与
互质),则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce7cc0ad7521b5771950aea983f0c1c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce7cc0ad7521b5771950aea983f0c1c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4c9e69c7d5a3d7a5633a373a8a39544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/786c6406780167f9744d0f9e9682e471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d02ea8c4988c5c28ab93f0d70fb55a.png)
A.若n为质数,则![]() | B.数列![]() |
C.数列![]() | D.数列![]() |
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7日内更新
|
207次组卷
|
2卷引用:湖北省宜荆荆2024届高三下学期五月高考适应性考试数学试题
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4 . 已知实数
满足
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4edfef181ed229ed1a3bb2295be7db9.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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5 . 已知数列
是公差为
的等差数列,若它的前
项的和
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90bfe21c96489cb30c544d49ddb4c1c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5596e3d616cd804ad9a29a98b720831d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/079f16bbd0704ecb6e5e44c5725af1d9.png)
A.若![]() ![]() ![]() ![]() |
B.![]() ![]() |
C.![]() |
D.![]() |
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2024-06-08更新
|
327次组卷
|
2卷引用:河北省衡水市2024届高三下学期大数据应用调研联合测评( VIII)数学试题
解题方法
6 . 已知锐角
的三个内角
,
,
的对边分别是
,
,
,且
的面积为
.则下列说法正确的是( )
![](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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2399f71125b424fd17c5da2ae796e5ce.png)
A.![]() |
B.![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() ![]() |
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2024-06-07更新
|
704次组卷
|
4卷引用:贵州省黔南州2024届高三下学期第二次模拟统考数学试题
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解题方法
7 . 球面三角学是研究球面三角形的边、角关系的一门学科.如图,球
的半径为R,A,B,
为球面上三点,劣弧BC的弧长记为
,设
表示以
为圆心,且过B,C的圆,同理,圆
的劣弧
的弧长分别记为
,曲面
(阴影部分)叫做曲面三角形,
,则称其为曲面等边三角形,线段OA,OB,OC与曲面
围成的封闭几何体叫做球面三棱锥,记为球面
.设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360d08a80e1786ee3cf7cfee9f2a65b2.png)
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/d7874b563ba2f6954d767ef8d14942f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b72138616782e9bdc1be790a1d582fcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5881068127a39caf319492b4177204f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a475fec8ded321e10a6697319fb975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44acc0ee22dc4b7750e8be825e7c1355.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4278c0911e7df78965e78cff69cac5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360d08a80e1786ee3cf7cfee9f2a65b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
A.若平面![]() ![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() |
D.若平面![]() ![]() ![]() |
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解题方法
8 . 已知
,且
,则下列结论成立的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec332d986525c03c83f94b2afda79512.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a48c13bafc3c63d8f0aec7f8ebfd72.png)
A.![]() | B.![]() |
C.存在![]() ![]() ![]() | D.![]() |
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解题方法
9 . 已知
内角A、B、C的对边分别是a、b、c,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2264c134952d41fb9bcb90e6c72c83.png)
A.![]() | B.![]() |
C.若![]() ![]() | D.若![]() ![]() ![]() |
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10 . 数列
满足
,
,
,
表示
落在区间
的项数,其中
,则( )
![](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/99708a89389c873bdfb48e7a49902ecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f64696f60c533ad95dc7890eb902741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d5745b57d8e86820da6790864dd3e6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7905fd422e78a1d22ff6f11950bc5cb.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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