名校
解题方法
1 . 已知二次函数
(
,
,
)只能同时满足下列三个条件中的两个:①
的解集为
;②
;③
的最小值为
.
(1)请写出满足题意的两个条件的序号,并求
,
,
的值;
(2)函数
的图象恒在函数
图象的上方,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c9ca15de80717300c0518cd82b561cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a57458464618fcf619375a93d3c66d69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd366ca13f1325bc135f33ee6393f4ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
(1)请写出满足题意的两个条件的序号,并求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c8500453af3e377175831dff2c98167.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
2 . 已知二次函数
的图象如图所示,有以下结论:①
;②
;③
;④
;⑤
,下面的选项中所有序号结论全正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e7ef804eeb23618fbf91ead47587f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f3893badb238dd11cfd88f87dffe425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c21bd0bd90a89b7ff5ac0eacf612a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/375386102cba5bfd93bdf340216eb22d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f6faa6c93ca0c16a5744c7fe02a1d7d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/25/4177ef45-be35-4ce2-bda8-02946169f0a9.png?resizew=152)
A.①②④ | B.②③④ | C.①④⑤ | D.③④⑤ |
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解题方法
3 . 二次函数
的图象如图所示,根据图象解答下列问题:
的两个根;
(2)若方程
有两个不相等的实数根,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13fa32c1e926f40a0722d106563777ef.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36fec0e2095e56379de8092798241aa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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名校
4 . 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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5 . 在同一直角坐标系中,函数
与
的图象可能是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d764e1fddb233e252d0604b73e13194.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da53929a8f67b9aa3827fdbd73ebd265.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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6 . 已知二次函数
.
(1)若函数
的图象与直线
相交于A,B两点,其中A点的横坐标为1,B点的横坐标为5,求m的值;
(2)求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4385bb433dac3ac43a993cac462eff.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4385bb433dac3ac43a993cac462eff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/254d0e3be93b3a32e45f3cd1f8c44891.png)
(2)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53adb74c1d8f48140887dcb2a5e4d4a3.png)
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名校
7 . 若下列两个方程:
,
至少有一个方程有实根,则实数a的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b265fae9fe9a59830c91ba9a0ec762c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bab67a391ba2678e91073f442b26425.png)
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2023-09-25更新
|
347次组卷
|
3卷引用:江苏省南京市中华中学2023-2024学年高一上学期学情调研(一)数学试题
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名校
解题方法
8 . 已知函数
若方程
有4个不同的零点
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db0ae332e619051b94c3f2fda5acf81b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25079f12119793682bee7dcd103d12e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ccd22fd0ca1a8e1468329284f91b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3604274ad6707a906eba371a9e884144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4acfa7c3d8301280a248e58d1e4e8c4f.png)
A.10 | B.8 | C.6 | D.4 |
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2023-09-24更新
|
714次组卷
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3卷引用:湖北省荆州市沙市中学2022-2023学年高一上学期12月月考数学试题
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名校
9 . 抛物线
(a,b,c是常数,
)经过
,
,
三点,且
.下面正确的结论有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f75807858b7804a1ad2039c41f323a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c832f2474efe89961ef41e884da7660c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b67c623950b5795d5fb4daeb8102a8df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae3a88c614758672f5d2f2149236476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
A.![]() |
B.![]() |
C.当![]() ![]() ![]() |
D.若关于x的一元二次方程![]() ![]() |
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名校
10 . 给定函数
,
,
.
(1)画出函数
,
的图象;
(2)
,用
表示
,
中的较小者,记为
,请分别用图象法和解析法表示函数
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6d40ef26f28c2b0ca3f71feccd30a32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e34d0dcc6c8d3ec910b04cd20cba5be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
(1)画出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad5fe274cfc8da2dacfb65801f344ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b426608a06477f57cb994f4d00e4465d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82397daa18bc3d884fdd29a7f0228453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b426608a06477f57cb994f4d00e4465d.png)
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|
618次组卷
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