已知函数y=mx2﹣2x+1的图象与坐标轴共有两个公共点,则m=.

已知函数y=mx22x+1的图象与坐标轴共有两个公共点,则m=      

答案

 01 

【考点】抛物线与x轴的交点;一次函数图象上点的坐标特征.

【分析】分别利用一次函数图象的性质以及二次函数与x轴交点的性质得出m的值.

【解答】解:当m=0y=2x+1是一次函数,此图象与坐标轴有两个交点,

m0,若函数y=mx22x+1的图象与坐标轴共有两个公共点,则与x轴必然一个交点,

b24ac=44m=0

解得:m=1

m的值为:01

故答案为:01

 

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