名校
解题方法
1 . 意大利著名数学家斐波那契在研究兔子繁殖问题时,发现有这样一列数:1,1,2,3,5,…,其中从第三项起,每个数等于它前面两个数的和,后来人们把这样的一列数组成的数列
称为“斐波那契数列”,记
为数列
的前n项和.下列关于“斐波那契数列”的结论:①
,②
,③
,④
.其中,所有正确结论的序号是_______ .
![](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/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0876b7e2271371d8a7ea0e77a833a48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9dd8d7d1a6821122cedd036ef8ecced.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b75e9270a7cdbc04065b2f7b2b3a8ecc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74025df972695f68a7cc0a4c645f3693.png)
您最近一年使用:0次
2024-04-05更新
|
210次组卷
|
2卷引用:北京市怀柔区第一中学2023-2024学年高二下学期4月月考数学试题
名校
2 . 已知函数
.给出下列四个结论:
①存在实数a,使得
有最大值;
②对任意实数a,使得
存在至少两个零点;
③若
,则存在
,使得
;
④函数
的值域不可能是R.
其中所有正确结论的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9deb57038a843a254cd8812599984cb.png)
①存在实数a,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
②对任意实数a,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ac9eb4f13a6ec140f7050e8d7dde52c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36bbb7d1210123054140d4a61d0df0bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd01f70d1e7fd605958547cbe1f34ae8.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
其中所有正确结论的序号是
您最近一年使用:0次
名校
解题方法
3 . 已知曲线
.关于曲线W有四个结论:
①曲线W既是轴对称图形又是中心对称图形;
②曲线W的渐近线方程为
;
③当
时曲线W为双曲线,此时实轴长为2;
④当
时曲线W为双曲线,此时离心率为
.
则所有正确结论的序号为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb65152906dd85d99319f2aa0b8e9fe.png)
①曲线W既是轴对称图形又是中心对称图形;
②曲线W的渐近线方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eba80160fe41b335cd9e54fd449f8387.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59c328c9c4ec69c4275e27576fb61655.png)
④当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59c328c9c4ec69c4275e27576fb61655.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7881094ce2f907c3aaf664318ecd3e2d.png)
则所有正确结论的序号为
您最近一年使用:0次
2024-01-26更新
|
152次组卷
|
2卷引用:北京市怀柔区第一中学2023-2024学年高二下学期2月测试数学试题
解题方法
4 . 在
中,
是边
的中点,
是边
上的动点(不与
重合),过点
作
的平行线交
于点
,将
沿
折起,点
折起后的位置记为点
,得到四棱锥
,如图所示,给出下列四个结论:正确的是_______ .
不可能为等腰三角形;
②
平面
;
③对任意点
,都有平面
;
④存在点
,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7e8a02a7f28add9b9f32e836fd8a55f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57650963051ccb44a3cfb24f08228405.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f9596850884048064a3ec8bd48c4762.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81fa367ec317fe2a30142e1c30cce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d246f9eceab371ebf47a47c2f11a4ad.png)
③对任意点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30802944c1ea7d005c392e9a54eabedc.png)
④存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/666e81326945f168fc30291f1bb2fc10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9986e9390b44ddde72b54779f5825bb6.png)
您最近一年使用:0次
5 . 在
中,
,D是边AC的中点,E是边AB上的动点(不与A,B重合),过点E作AC的平行线交BC于点F,将
沿EF折起,点B折起后的位置记为点P,得到四棱锥
,如图所示,给出下列四个结论,其中所有正确结论的序号是__________ .
不可能为等腰三角形;
②
平面PEF;
③当E为AB中点时,三棱锥
体积的最大值为
;
④存在点E,P,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5701ee5fb156e25cc18db1229590d49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2ea13010e2399194be2a681310543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57650963051ccb44a3cfb24f08228405.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f9596850884048064a3ec8bd48c4762.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81fa367ec317fe2a30142e1c30cce7.png)
③当E为AB中点时,三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e73fe210736ce7b30b039d34587e3c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
④存在点E,P,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9986e9390b44ddde72b54779f5825bb6.png)
您最近一年使用:0次
2023-08-04更新
|
484次组卷
|
5卷引用:北京市怀柔区2022-2023学年高一下学期期末数学试题
北京市怀柔区2022-2023学年高一下学期期末数学试题(已下线)高一下学期期末复习填空题压轴题二十三大题型专练(2)-举一反三系列(人教A版2019必修第二册)(已下线)专题06 空间中点线面的位置关系6种常考题型归类(2) -期期末真题分类汇编(北京专用)(已下线)专题08立体几何期末14种常考题型归类(2) -期末真题分类汇编(人教B版2019必修第四册)【北京专用】专题15立体几何与空间向量(第四部分)-高一下学期名校期末好题汇编
6 . 已知函数
,当
时,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/253a1f84cbb9f46097db4a4d309e7a8a.png)
______ ;若函数
有三个零点,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dab1b114cf60480cd4a34648a63960d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/253a1f84cbb9f46097db4a4d309e7a8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0384a0466920e5bf00231a5c5bf77969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
7 . 对于函数
,若在其定义域内存在
,使得
成立,则称函数
具有性质
.
(1)下列函数中具有性质
的有___________ .
①![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f1f5396e33b33c0b548c132f78aa611.png)
②![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ca2cae24f8f820834704dec8fb42389.png)
③
,(
)
④![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d40624fc4d5a669a76185052ee6b8.png)
(2)若函数
具有性质
,则实数
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70553c9d6e344021e386af08bde75c74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)下列函数中具有性质
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f1f5396e33b33c0b548c132f78aa611.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ca2cae24f8f820834704dec8fb42389.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a3f58722394cad3df7234b543be4587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc4136bd17997e11a7f8abcb19f9018.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d40624fc4d5a669a76185052ee6b8.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc8ca8ea93e01e9e0f0c3e4aa5425448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2021-10-13更新
|
590次组卷
|
10卷引用:北京市怀柔区第一中学2022届高三10月月测数学试题