名校
解题方法
1 . 已知函数
的导函数为
,当
时,
成立,则下列不等式一定成立的是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d49ec515fb1fdc93ca4dda443326ad5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca089b83b22eaf5db3851bc88a3ad314.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
2 .
中,内角A,B,C所对的边分别为
.①若
,则
;②若
,则
一定为等腰三角形;③若
,则
一定为直角三角形;④若
,
,且该三角形有两解,则
的范围是
.以上结论中正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2914b3a076102aa20c37b8f271e3491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca51be437b1a97ca92aa1159ab71102c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19dc38d888741a1b2e95fe0773a48c38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b883d9703a1deaf8dbc18097c6b8bb2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33f60e5761cc8e165eb470a8894b5d2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b1dd07c0571772e96d318f974724810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/772c0affad8d0c8f3dba25c1eee7834b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea0c6abd1f8cb11a9af35a1c872bc7dc.png)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
2020-03-05更新
|
944次组卷
|
6卷引用:【全国百强校】安徽省蚌埠市第二中学2018-2019学年高一下学期期中考试数学试题
名校
解题方法
3 . 等差数列
的前
项和为
,若
,则满足
的正整数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.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/51785fc99f097e27659f720bec95d122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a8e1bb201b13f61d9f8916f20925439.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
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名校
解题方法
4 . 已知函数
,对任意实数
都有
成立,当
时,
恒成立,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a01160a0a3c9cb144ba35c7f8acd10e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b3b657ebd1733b4f19dcbec44919924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1591d4244dcf5539a4ae98f554e91e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2020-03-04更新
|
460次组卷
|
5卷引用:安徽省池州市第一中学2020-2021学年高一上学期12月月考数学试题
安徽省池州市第一中学2020-2021学年高一上学期12月月考数学试题江西省新余市第一中学2019-2020学年高一上学期第一次段考数学试题江西省南昌市第三中学2020-2021学年度高一10月份月考数学试题(已下线)【南昌新东方】 江西省南昌三中2020-2021学年高一上学期10月第一次月考数学试题四川省攀枝花市第七高级中学校2021-2022学年高一上学期第一次月考数学试题
名校
5 . 在平面直角坐标系
中,已知直线
(
为参数),以坐标原点为极点,
轴的非负半轴为极轴建立极坐标系.点
在曲线
上运动,点
为线段
的中点.
(1)求动点
的运动轨迹
的参数方程;
(2)若直线
与
的公共点分别为
,当
时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d430b5c4c3a4d1c8e55550ae2efe5237.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb32336a07bdea17b0c634a56337fc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c7d3d89b684b78bd1c216ddd2e070b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2020-03-04更新
|
842次组卷
|
6卷引用:安徽师范大学附属中学2021-2022学年高三上学期入学考试理科数学试题
解题方法
6 . 在
中,角A,B,C的对边分别为a,b,c.若
,
,则
的形状为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a64b4d679a2a1364ef822f2f0d04960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ca890db371750d26ec7f049cfe4f714.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
A.直角三角形 | B.等边三角形 | C.等腰直角三角形 | D.等腰或直角三角形 |
您最近一年使用:0次
2020-03-03更新
|
239次组卷
|
3卷引用:安徽省安庆市2023-2024学年高二上学期期末考试数学试题
名校
解题方法
7 . 已知
,
,且
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b54ad995898a163d7395cbeb9a126425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-02-28更新
|
1046次组卷
|
16卷引用:安徽省亳州市利辛县阚疃金石中学2020-2021学年高二上学期期末数学试题
安徽省亳州市利辛县阚疃金石中学2020-2021学年高二上学期期末数学试题山东省滨州市五校2019-2020学年高一上学期期中联考数学试题江苏省南通市海门中学2020-2021学年高一上学期10月质量检测数学试题北京市首都师范大学附属中学2020-2021学年高一上学期开学分班考试数学试题福建省福州市第八中学、仙游第一中学2020-2021学年高一上学期期中考试数学试题福建省泉州实验中学2020-2021学年高一上学期数学期中联考试题江苏省泰州市泰兴市第三高级中学虹桥校区2020-2021学年高一上学期期中数学试题江苏省南通市通州区金沙中学2020-2021学年高一上学期期中数学试题(已下线)专练16 一元二次函数、方程、不等式综合检测卷(A卷)-2021-2022学年高一数学上册同步课后专练(人版A版必修第一册)江苏省镇江市扬中市第二高级中学2021-2022学年高一上学期第一次检测数学试题湖北省武汉市第十四中学2021-2022学年高一上学期10月月考数学试题山东省青岛市青岛第五十八中学2020-2021学年高一上学期期中数学试题河南省周口市陈州高级中学2021-2022学年高三上学期10月月考数学(理)试题河南省濮阳市第一高级中学2021-2022学年高一上学期期中考试数学试题(已下线)第二章 一元二次函数、方程与不等式单元测试(基础版)-【冲刺满分】(已下线)专题03 均值不等式及其应用 (1)
8 . 定义:
表示不超过x的最大整数,如
,
,则函数
(
)的值域为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3420606c96b68fb884c839923fd20a25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98a2e0730e197359e0ff1b930c1c4546.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7e07bc5466a76fca117bc5b5d39b164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb40a36a293471742ce75f6b9635b8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
9 . 设S,T是R的两个非空子集,如果存在一个从S到T的函数
满足:
(ⅰ)
:
(ⅱ)对任意
,
,当
时,恒有
,那么称这两个集合“保序同构”,以下集合对是“保序同构”的是______ .(填写序号)
①
,
②
,
③
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c529dd7d9204423d371fbcd9cc6d20d.png)
④
,
或
⑤
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
(ⅰ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bece0083e76facc89aafd8f33a450d66.png)
(ⅱ)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f50f015b446e146c4178da1ec7b5c97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6af409949b4e2748ca5b790c77b1173c.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb91b5ec7b6eaccccedabaf2613d2e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be4d65dfa8d8e103e3811ca274477b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9ce85c417ddae5fb34256dc1fb81f7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63fab05cc42f2f432d6e3fcbf13632b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/843c3f388a75bf981c11ca947a86e5fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c529dd7d9204423d371fbcd9cc6d20d.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098b0d055aff3c487ec52359efd89bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85f69d88d56b0f4e70f14b3b80b81f96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/217a0d0d6cefd696716a1e0196ddb43e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85a32c0dcfa5e912fb8f9cfeefc2be26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23e84710fa14977c09a2f851b83bcb3e.png)
您最近一年使用:0次
10 . 定义集合
称为集合
与集合
的差集.又定
称为集合
的对称差集.记
表示集合
所含元素个数.现有两个非空有限集合
,若
=1,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e3d7396b046daafa192ef4fce02714f.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/3f61e660434230573eb7ccefcec7cf43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc8279d9dd0b7750953cb9e2098b3b90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fe7fd9b0c3c203a053a7ea52b71e7c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/355b24eac2d793471c4b2c733718a6bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e113caecffa47eb555b79cab1dba5a1.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次