若二次函数y=a
+bx+c(a≠0)的图象的顶点在第二象限,且过点(0,1)和(1,0),则m=a-b+c的值的变化范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
A.0<m<1 | B.0<m<2 | C.1<m<2 | D.-1<m<1 |
2022·山东济南·一模 查看更多[1]
更新时间:2022-04-30 11:30:31
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【推荐2】已知二次函数
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【推荐1】抛物线
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名校
【推荐2】如图所示为抛物线y=ax2+bx+c(a≠0)在坐标系中的位置,以下六个结论:①a>0;②b>0;③c>0;④b2-4ac>0;⑤a+b+c<0;⑥2a+b>0.其中正确的个数是( )
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【推荐1】已知二次函数
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;③
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【推荐2】如图,抛物线y=a2+bx+c的对称轴为
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