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1 . 二次函数
的图象如图所示,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/13/b6388e5b-3a26-4731-94d5-52a88683357e.png?resizew=153)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-10-13更新
|
346次组卷
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4卷引用:甘肃省永昌县第一高级中学2023-2024学年高一上学期第一次月考数学试题
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解题方法
2 . 对于二次函数
,若存在
,使得
成立,则称
为二次函数
的不动点.
(1)求二次函数
的不动点;
(2)若二次函数
有两个不相等的不动点
,且
、
,求
的取值范围;
(3)若对任意实数
,二次函数
恒有不动点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7afa70a213c1f530ab70e0786deac7a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070054c0b4182ab7399ed56925844e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c161d512f99df7d4d3cb4b5815153d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7afa70a213c1f530ab70e0786deac7a7.png)
(1)求二次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72e87b909f2729e677e7755535317296.png)
(2)若二次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/232d6e9ecfe92db1e5f2e45a9700fbac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2fe3251e054fe97089806ba7033f802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若对任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2870d289e69ce43c3f7798aeb6bf44a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2023-10-09更新
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3 . 已知二次函数
与
轴的交点为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0200bb2c3cc080a5d1ecf36f80aea0a.png)
(1)若二次函数
的零点为2和3,求
的值;
(2)若
开口向下,解不等式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c72656c882b2830eeb8053ec18c0088f.png)
(3)若函数
的图象过原点,方程
有实数根,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0200bb2c3cc080a5d1ecf36f80aea0a.png)
(1)若二次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c847f857b8d1788d4ba414b82840ef5e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c72656c882b2830eeb8053ec18c0088f.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee9953126833e635b7ed05b73a38b8d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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4 . 已知二次函数
,在下列条件下,求实数
的取值范围.
(1)两根均大于1;
(2)一个根大于1,一个根小于1.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95346e90f128c88136bc4becb6d159a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4887473a8091e1ef53a169cc9f211e3a.png)
(1)两根均大于1;
(2)一个根大于1,一个根小于1.
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2022-10-23更新
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5 . 已知函数
在区间
上的最小值为
,则a的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79c0de418c09648d30d205b5d38852e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bea0491df36a50c5bdfe90224f8ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b17ca1e04c68f59bddc675411a0ea2fa.png)
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解题方法
6 . 已知函数
满足
,函数
与
图像的交点分别为
,
,
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ae9fbc747843a9db6f04d2806c21aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9195b0ee649caa71c65cb85e28312fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56720e2f2b0ddd72156da495923698da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2852ae85cfcc804b3192ea8543c88938.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1947266946e35d8f997e6572c27ac6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e9394abf88aa5a95e55a7a8a5d9207d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d00fe5eacfd1debb6c489c01e9e5f411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a8b5197f05d82ee6b5aa24e5d14831.png)
A.-10 | B.-5 | C.5 | D.10 |
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501次组卷
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2卷引用:甘肃省靖远县第四中学2022-2023学年高三上学期第一次月考数学(文)试题
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解题方法
7 . 已知二次函数
的图象与
轴交于点
与
,其中
,方程
的两根为
,则下列判断正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9df2062940530232ab124a571e951ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb652143b43cc9439a347b2b1dc5cf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe798ee9fbfadac0a8b678e766d38bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3b70aeff7c01e637f9caac346798ff8.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2022-09-08更新
|
905次组卷
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8 . 如图是二次函数
图象的一部分,图象过点
,对称轴为
.给出下面四个结论:①
;②
;③
;④
.其中正确结论的序号是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ee80939187a84e1863eeb192a301c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/375386102cba5bfd93bdf340216eb22d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6374a481d7780aaa51e9cb86aba9989b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c766352f0be38b719621052de92615bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7774e9721b563d3200f83345861c8943.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/19/82e1a780-9289-4703-8e78-5afa6d4633fa.png?resizew=184)
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5卷引用:甘肃省天水市第一中学2019-2020学年高一上学期11月月考数学试题2
甘肃省天水市第一中学2019-2020学年高一上学期11月月考数学试题2湖北省天门市2019-2020学年高一上学期11月月考数学试题陕西省渭南市韩城市新蕾中学2020-2021学年高一下学期第四次月考数学试题新疆伊犁州新源县2021-2022学年高二下学期期末考试数学(文)试题(已下线)4.1一元二次函数-高一数学同步精品课堂(北师大版2019必修第一册)
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9 . 如图,二次函数
的图象与x轴交于两点
,
,其中
.下列三个结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/14/1bb3eba8-6a20-480c-aa99-e11f04cf090a.png?resizew=122)
①
;
②
;
③
,
正确的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd69aebdafb31468eb13ce3b28a36e47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9df2062940530232ab124a571e951ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab8a0cc6504aa4c3a38006f5394b4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4d5b159da139b50cde0d087f462aa4d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/14/1bb3eba8-6a20-480c-aa99-e11f04cf090a.png?resizew=122)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16de2d7f06346a0fc6b5d6822e746237.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a31d3ff0489fd0dec060f5f1cc30117.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107b1f4c91cf33060190615f18f80754.png)
正确的个数是( )
A.0 | B.1 | C.2 | D.3 |
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解题方法
10 . 设二次函数
满足:对任意
,都有
.
(1)求
的解析式;
(2)若关于
的方程
有两个实数根
,
,且满足:
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e673567bbe8752508c70d7ef6c72018.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc231c399eaba3ac0c3593ca0a362f1d.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/1ed6d6b8a7794243c910a80244accf13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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