方程
的根可视为函数
的图象与函数
的图象交点的横坐标,那么用此方法可推断出方程
的实数根x所在的范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43e0ebe9b00dfe20c03ae6e791b2cb97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c608def11fa0e2b34f05592ef1d11fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f42b2a9736c8943106472a7398d2892.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc9455963b0815bc5db9639a27bdca6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-03-31 15:31:08
|
相似题推荐
单选题
|
较易
(0.85)
名校
【推荐1】下表是二次函数
的自变量x与函数y的部分对应值,那么方程
的一个近似根是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f4d46d588b2439f70d2fbd833336bfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a76159bf6f1c72293497e0bccd0163f.png)
x | ||||
y |
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】下表是一组二次函数
的自变量
与函数值
的对应值:
那么方程
的一个近似根的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d6b71b824afef839d2c1aece4be9748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
1 | |||||
0.59 | 1.16 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec4e47974e37bc99cc6a0234ead9eccb.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
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【推荐1】如图,二次函数
的图象过点
,对称轴是直线
.下列判断正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c6ed6a3b3056d3762d8a234d3a9d2a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcbcd0aebdd8bd688d108834747009f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/29/42b374b8-3bdf-4fdf-af5a-ff4d343a992c.png?resizew=106)
A.![]() | B.![]() |
C.![]() | D.若点![]() ![]() |
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【推荐2】抛物线
的对称轴为直线
,与x轴的一个交点坐标为
,其部分图象如图所示,下列结论∶①
; ②
; ③方程
的两个根是
; ④当
时,y随x的增大而减小.其中正确结论的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c21bd0bd90a89b7ff5ac0eacf612a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad29acf28ab96fb1604e80c743bd738f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13fa32c1e926f40a0722d106563777ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b4860f0d7f25d12626f44a9c6350b20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/13/a6d9bdd8-5f95-4e6f-8ead-15258c291f6e.png?resizew=124)
A.1 | B.2 | C.3 | D.4 |
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【推荐1】如图,在平面直角坐标系中,正方形
的顶点
在直线
上,顶点
在函数
的图象上,
、
两点在
轴上.若点
的横坐标为
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ac79e422ba4876949f0514c44539b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b9f0b9e53a83e68f5fec944f343119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6956752841370820f393dc0e58cf406.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af2fdf1944afebb51cb6a5e6c74aadd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.6 | B.![]() | C.12 | D.![]() |
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【推荐2】如图,菱形
的顶点
在
轴上,顶点
的坐标为
.若反比例函数
的图象经过点
,则
的值为
![](https://img.xkw.com/dksih/QBM/2013/7/12/1573668867473408/1573668871446528/STEM/79d143db776947c0b5f0a7b0439bde59.png)
![](https://img.xkw.com/dksih/QBM/2013/7/12/1573668867473408/1573668871446528/STEM/f53194a99c0b49f4a42d51a5c5ed8a01.png)
![](https://img.xkw.com/dksih/QBM/2013/7/12/1573668867473408/1573668871446528/STEM/bdf7b2fd1b76443faf36b9c23be1f9b4.png)
![](https://img.xkw.com/dksih/QBM/2013/7/12/1573668867473408/1573668871446528/STEM/c41d343cdd844907bdbef9cb50c0e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcab2c5c85301cf851418b1f57402d22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/2013/7/12/1573668867473408/1573668871446528/STEM/6a9e8097dfe14957adcac26128050fa3.png)
![](https://img.xkw.com/dksih/QBM/2013/7/12/1573668867473408/1573668871446528/STEM/79d143db776947c0b5f0a7b0439bde59.png)
A.-6 | B.-3 | C.3 | D.6 |
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