名校
解题方法
1 . 已知函数
满足当
时,
,且当
时,
;当
时,
且
).若函数
的图象上关于原点对称的点恰好有3对,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db2b74d89854116e411c089d053df053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c16480cde04662061543f96e47e36c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83f8964b248e363172098e8b76bbd80a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76c838cea7b501a860f60140f59df388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c10241873be6065e90fa9e38a168ca89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-04-20更新
|
2330次组卷
|
14卷引用:甘肃省张掖市2022-2023学年高三上学期第一次诊断考试数学(理)试题
甘肃省张掖市2022-2023学年高三上学期第一次诊断考试数学(理)试题2020届黑龙江省齐齐哈尔高三二模理科数学试题江西省南昌市2020届高三第三次模拟考试数学(文)试题东北三省三校(哈师大附中 东北师大附中 辽宁省实验中学)2020届高三高考数学(理科)三模试题(内)(已下线)专题3.7 函数的图象(练)-2021年新高考数学一轮复习讲练测2021年四川省成都市新都区高三摸底测试理科数学试题四川省泸州市泸县第五中学2020-2021学年高三上学期一诊模拟考试理科数学试题四川省泸州市泸县第五中学2021届高三数学一诊试卷(理科)试题安徽省阜阳市太和中学2021届高三下学期高考押题文科数学试题四川省遂宁市射洪中学2021-2022学年高三上学期第一次月考数学(理科)试题(已下线)专题2-2 中心对称、轴对称和周期性归类-2022年高考数学毕业班二轮热点题型归纳与变式演练(全国通用)天津市和平区2022届高三下学期二模数学试题(已下线)专题02 函数性质(单调性、奇偶性(对称性)与周期性综合)-2天津市第七中学2022-2023学年高二下学期5月月考数学试题
名校
解题方法
2 . 如图所示,在
中,
,
,AD与BC相交于点M.设
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/fbc66efa-91ed-4706-a2e6-8094e845d6ef.png?resizew=194)
(1)试用向量
,
表示
;
(2)在线段AC上取点E,在线段BD上取点F,使EF过点M.设
,
,其中
.当EF与AD重合时,
,
,此时
;当EF与BC重合时,
,
,此时
;能否由此得出一般结论:不论E,F在线段AC,BD上如何变动,等式
恒成立,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b83beedb3438153e6f728545fe3e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/325099c8a286bc22e67321ce3af5b49b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef86ffd2bf72dcfb82b82f839a35e452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91a9cb32a25c2a8bb99f75633b4cd5ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/049131856ba841523793ee3d83099014.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/fbc66efa-91ed-4706-a2e6-8094e845d6ef.png?resizew=194)
(1)试用向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b6799b234237333b0efa331d98f0374.png)
(2)在线段AC上取点E,在线段BD上取点F,使EF过点M.设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9795568e7c599718a29bc80cc3405233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f4fdd03782afd69e06cdd75fb050b89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8a900d0b93f73490e7efc2e444bb016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500d68f2678989a5ce7431cfd51b019d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76819195cffab10d81638dd673f3af98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2aec178e9393c6d42787506af6bf8d11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1c3ea872a20fdc1843cb5ffce8a554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2753dc1c83d54044b89e628a7eb247f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4989ac1657338153cb81915fe6090bc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4989ac1657338153cb81915fe6090bc1.png)
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2020-04-17更新
|
1193次组卷
|
4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
名校
3 . 若
(
,且
).
(1)当
时,若方程
在
上有解,求实数
的取值范围;
(2)若
在
上恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a514484beb60da501a6c913049430cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cf2588648994a4562f364cd05931289.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3654254401fc902c3cb4912969f21f88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66d61d5f66d68b4c4a2a25fd7103621.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee4f0643ea23ef34752af491ba7c416b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2020-02-06更新
|
817次组卷
|
5卷引用:甘肃省天水市武山县第一高级中学等2校2022-2023学年高一上学期期末数学试题
名校
解题方法
4 . 如图,在四棱锥
中,底面
是直角梯形,
,
,
底面
,点
为棱
的中点.
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/26/e056feee-1354-4eb2-a2be-aaf4561595cb.png?resizew=184)
证明:
平面
.
若
为棱
上一点,满足
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d31600cba2d5256c7e78b6122d6755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037afbe66e15832d3ac4ff3694c7c2fb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/26/e056feee-1354-4eb2-a2be-aaf4561595cb.png?resizew=184)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d05c50ea5f6068e3ebc11ec59723d083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c372d059202ec388960b125d4a87dc84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f26c2ded122a46dd44b8d8b2740a4ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f2a245381e615882ee5feb7793a1df6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7c507504932bbd38c9d21d31b943a4.png)
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2020-03-25更新
|
1264次组卷
|
3卷引用:甘肃省天水市第一中学2018-2019学年高二下学期第一次段考数学(理)试题
名校
解题方法
5 . 某超市试销某种商品一个月,获得如下数据:
试销结束后(假设该商品的日销售量的分布规律不变),超市决定正式营销这种商品.设某天超市开始营业时有该商品
件,当天营业结束后检查存货,若发现存货少于
件,则当天进货补充至
件,否则不进货.将频率视为概率.
求当天商品进货的概率.
记
为第二天开始营业时该商品的件数.
求
得分布列.
求
得数学期望与方差.
日销售量(件) | ![]() | ![]() | ![]() | ![]() | ![]() |
频率 | ![]() | ![]() | ![]() | ![]() | ![]() |
试销结束后(假设该商品的日销售量的分布规律不变),超市决定正式营销这种商品.设某天超市开始营业时有该商品
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f753c66e82980ba545b4ae340f45da4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60e349d07c0ae25a9d8bd29b3ce9d132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b274aa203bef5bda0a2f1379b5cf38ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b67d5a767d9c49867c44d802983a3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
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名校
6 . 已知
为椭圆
的两个焦点,P(不在x轴上)为椭圆上一点,且满足
,则椭圆离心率的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9931f2102f3415dcdd2ba37a57afd8fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21c9588c07f728e26029b64d8d92fbcd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-01-20更新
|
1299次组卷
|
3卷引用:甘肃省平凉市静宁县第一中学2019-2020学年高二上学期期末数学(文)试题
7 . 数列{an},{bn}满足bn=an+1+(-1)nan(n∈N*),且数列{bn}的前n项和为n2,已知数列{an-n}的前2018项和为1,那么数列{an}的首项a1=________ .
您最近一年使用:0次
2020-01-18更新
|
408次组卷
|
4卷引用:甘肃省天水市、平凉市2022届高三一模数学(理)试题
甘肃省天水市、平凉市2022届高三一模数学(理)试题【市级联考】江苏省常州市2019届高三上学期期末考试数学试题(已下线)专题13 等差、等比数列的应用-《巅峰冲刺2020年高考之二轮专项提升》(江苏)人教B版(2019) 选修第三册 一举夺魁 第五章 学科素养提升
名校
8 . 已知双曲线
的左、右焦点分别为
,
,以
为直径的圆与双曲线的四个交点依次连线恰好构成一个正方形,则双曲线的离心率为.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5c2e64358e0ec7aa142c336d970306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/643ef7d761de0e794fc39937dc72ac6a.png)
A.![]() | B.![]() | C.2 | D.![]() |
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2020-01-06更新
|
731次组卷
|
6卷引用:甘肃省白银市会宁县第一中学2019-2020学年高二上学期期末数学(文)试题
9 . 计算:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b904bdfeb79fd8cc03bec158774331a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c1b68e04ddc060da3bacb7fd0bcc683.png)
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2019-12-25更新
|
1308次组卷
|
4卷引用:甘肃省定西市岷县第二中学2019-2020学年高一上学期期中数学试题
甘肃省定西市岷县第二中学2019-2020学年高一上学期期中数学试题(已下线)第01讲 指数(教师版)-【帮课堂】2021-2022学年高一数学同步精品讲义(苏教版2019必修第一册)安徽省芜湖市第一中学2022-2023学年高一上学期11月期中数学试题(已下线)模块四 专题7 大题分类练(幂函数、指数与指数函数)拔高能力练(人教A)
10 . 函数
为定义在
上的偶函数,且满足
,当
时
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/690fb94a8bd4522c576bc47ae88b67ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a349161b52f9493112280309454cd9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e619e6b47fbb753d193ddfdf3179d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d48417301f6961b5c44b7bbc69fc56e.png)
A.-1 | B.![]() | C.2 | D.-2 |
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