若抛物线
与x轴围成封闭区域(包含边界)内整点(点的横、纵坐标都是整数)的个数为k,则函数
的图象是如图所示的( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/8/d4552132-1693-4f39-bb30-f931c0f29047.png?resizew=289)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e237d20288be1b1a68d40f44ed3069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a3d48878d4e43a69fc7b92c67df546.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/8/d4552132-1693-4f39-bb30-f931c0f29047.png?resizew=289)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2022-09-11 07:50:51
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相似题推荐
单选题
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适中
(0.65)
【推荐1】在四个函数
,
,
,
(
为常数)的图像中,是中心对称图形且对称中心是原点的图像有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b9f0b9e53a83e68f5fec944f343119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/646e11d5bff57e56ce82c2339f2d71ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ec89d17a1b8f7961e2f1f27c2d50685.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852247dd71f47980c304e3c73117f952.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.0个 | B.1个 | C.2个 | D.3个 |
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【推荐2】关于直线y=4x,下列说法正确的是( )
A.直线过原点 | B.y随x的增大而减小 |
C.直线经过点(1,2) | D.直线经过二、四象限 |
您最近一年使用:0次
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适中
(0.65)
【推荐1】如图,抛物线
的对称轴是直线
,并与x轴交于A,B两点,若
,则下列结论中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/9/dedc40ba-1f7a-4576-8e6a-a3618ddf81d3.png?resizew=150)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe6337d68cd5653767e3a1889b8b2e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/463319053d27fdb1185bf14fa9e72cc5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/9/dedc40ba-1f7a-4576-8e6a-a3618ddf81d3.png?resizew=150)
A.![]() | B.![]() |
C.![]() | D.若m为任意实数,则![]() |
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【推荐2】若关于x的一元二次方程
有实数根
、
,且
,有下列结论:①
;②
;③二次函数
的图象与x轴交点的坐标为
和
.其中,正确结论的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5a9670f99b324b9c7729dc784ba765d.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/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85feaa0f6ce7f2926a66ebb864c57003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2c9899cc04adc6685962b940cc8c6e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c8c436698c3dcb16236315414df04aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c3a2f5b0702ea9fbb9dc8904579737.png)
A.0 | B.1 | C.2 | D.3 |
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【推荐1】在平面直角坐标系中,点
为坐标原点,抛物线
与
轴交于点
,与
轴负半轴交于点
,连接
,将
向左上方平移,得到
且点
落在抛物线的对称轴上,点
落在抛物线上,则直线
的表达式为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c0781a9acdedd45dbdf6855f91ead86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b352fa3e781df195ceccca90c3932a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4f1dc9ce028bea9ae0be620e416453c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68542f71b160e05bb5e2477b86000503.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb0628cecbfc98d390e5447d52414e8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】抛物线
与x轴的交点个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bcdec8f155b857d26365c305f932f92.png)
A.3个 | B.2个 | C.1个 | D.0个 |
您最近一年使用:0次