名校
解题方法
1 . 已知定义域为R的函数
的解析式为
,设t为实数,若关于
的方程
恰有两个不相等的实数根
且
,则试将代数式
表示为关于t的函数的结果为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94feafce47b51fb6c30a34952aed4aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f178595ab68770554d73330cd5ac0d3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9b37f24302bb2cbb443837c9bb6cd81.png)
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2 . 已知函数
的图象关于直线
对称.
(1)求
,
的值;
(2)若关于
的方程
有5个不同的实数解,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/862ed768d414420af77f0c6c9e8cae7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be024eb0761c976d02cef1f64ced294b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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3 . 已知函数
.
(1)若函数
在
上有唯一零点,求a的取值范围;
(2)当
时,求证:对任意的
,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a19b27127c410c20c13f0542b2280595.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12ad3ebe41e5220b07f267a7687ffc93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d9a38261dd741341e2ea6d88f0b4ded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c53b1e930e67dda40097d9a704ec9798.png)
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2卷引用:广东省惠州市光正实验学校2023届高三上学期11月月考数学试题
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4 . 已知函数
与函数
的图像在
恰好有一个交点,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83699f9e26b0bb40a0ee4ab45cafcff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df0c300246d6b3d6b8fa9f0ebbe923c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047056c99b39c70fa40d3c8178e5b631.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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5 . 已知
,若存在
,使得
,则下列结论正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ff904f91193bed652de086d8bebb701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f6411f48a8ce1651af50fe3ac27fbbc.png)
A.实数![]() ![]() | B.![]() |
C.![]() | D.![]() ![]() |
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6 . 若关于x的方程
有四个不同的实数解,则实数k的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57c243a2ab9f33990f949a599da9ada1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 已知函数
,若关于x的方程
有8个不同的实数解,则整数m的值为___________ .(其中e是自然对数的底数)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad7b5465343e801a600751ed3e3376d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/217b4f847218722c0440d87a0d26b63d.png)
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名校
8 . 已知函数
,且
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aa3d0cc83537aa20830cb0d3df50af3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/249a976e88133f3b3733f09137cf5c42.png)
A.函数![]() ![]() |
B.函数![]() |
C.若方程![]() ![]() ![]() |
D.设函数![]() ![]() ![]() ![]() |
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解题方法
9 . 已知函数
,
.
(1)当
时,若
有最大值4,求
的值;
(2)求满足下列条件的所有整数对
:存在
,使得
是
的最大值,
是
的最小值;
(3)对满足(2)中的条件的整数对
,已知定义域为
且
的函数
满足:
,且当
时,
.若函数
的零点的个数为4个,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/372b69d230a4f669c584ff43fbe739b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/710f02d0cd22b501d00d1a1c980d1c03.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求满足下列条件的所有整数对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03e483e8a37a8e0e1fb327f99ad93ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d0532bf8ea573af0bc5bbda9e52154.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(3)对满足(2)中的条件的整数对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4562f3225c98cf5cb11b47d98c9cc9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb3125b510c7aedb73b9059b11ea8123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cddf5b30e7fb3a3555ececf8adb9453f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3da7740e9695750eab42f4ccb7d3fb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/362b533803505968c1621fe0b535b99f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ac16d9e3f3e192ae3a9315935f38155.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a41d33efa0ebaa8b4ea855fed4a234f7.png)
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5卷引用:第04讲 函数最值与性质 - 1
(已下线)第04讲 函数最值与性质 - 1上海市复旦大学附属中学2021届高三上学期第一次教学质量检测数学试题上海交通大学附属中学嘉定分校2022-2023学年高一下学期开学考试数学试题江西省上犹中学2022-2023学年高一下学期4月期中考试数学试题(已下线)5.3 函数的应用-同步精品课堂(沪教版2020必修第一册)
10 . 设函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddceefe542515550883009baede77fcf.png)
①若方程
有四个不同的实根
,
,
,
,则
的取值范围是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
②若方程
有四个不同的实根
,
,
,
,则
的取值范围是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
③若方程
有四个不同的实根,则
的取值范围是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd90676eb80fa1a5d35bffb087ef0a95.png)
④方程
的不同实根的个数只能是1,2,3,6
四个结论中,正确的结论个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddceefe542515550883009baede77fcf.png)
①若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338316b0fe50fdea0f2f75aec4c990dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365b38a7689a8eede6820cd6f1fe952b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a3d41be26be9622d0cbc9825778b362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
②若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338316b0fe50fdea0f2f75aec4c990dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365b38a7689a8eede6820cd6f1fe952b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2741ca619df1d9ab3d9ced4c49142dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
③若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cdcb20fdc8bab941d857045172f20a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd90676eb80fa1a5d35bffb087ef0a95.png)
④方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75d9afa1eea72c8331b3510dd5ad3b41.png)
四个结论中,正确的结论个数为( )
A.1 | B.2 | C.3 | D.4 |
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2022-11-23更新
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4卷引用:天津市南开中学2022-2023学年高三上学期第二次月考数学试题