抛物线
,
,
为常数,
经过
,
两点,下列四个结论:①点
,
,
,
在抛物线上,若
,
,则
.
②一元二次方程
的根为
,
;
③对于任意实数
,总有
;
④对于
的每一个确定值,若一元二次方程
为常数,
的根为整数,则
的值只有两个.其中正确的结论是____________ (填写序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729358c8511d239e3c26e00fa4711bb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01437b31b57b442d0c6bd5b0ca8bf61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d295a4cc3a58f9f38ee98337313c81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/428426e7f2ee0502b555a87a5cef6cb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5a54e0b4872cabdc0b07ea9380e4de5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a350eb41c3b7e4face9c3299eff9d49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b8e72f73db207c3040f143d837d5995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24529eadaef974ec0625f8ca40682e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ab1505308e2cf1c1ccc56df04e957e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f99df1a7b58018125b99578b779342.png)
②一元二次方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90bf45f18d95ba729ad9e53f03c5d76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/195fc747e2fc50cb6df2c844d51e4d80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9738bade4cd111c805a4e540115e26ed.png)
③对于任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2db4cfc67e51747af1aa25c4bf007d1c.png)
④对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f97cc027f00e2c3ade3ed25fd87f1bed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9f5f0f5039c65d4a24d098cce90db77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
更新时间:2023-06-09 18:43:32
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【推荐1】如图,二次函数y=ax2+bx+c(a≠0)的图象过点(﹣1,2),且与x轴交点的横坐标为x1、x2,其中﹣2<x1<﹣1,0<x2<1,则下列结论:①2a﹣b<0,②4a﹣2b+c>0,③b2+8a>4ac,④当x>0时,函数值随x的增长而减少,⑤a+c<1.其中正确的是_____ (填序号).
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【推荐2】二次函数
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名校
【推荐2】二次函数
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;②
;③关于
不等式
的解集:
;④
;⑤若点
,
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