题目:
(1)用配方法把二次函数y=x2-4x+3变成y=(x-h)2+k的形成;
(2)在直角坐标系中画出y=x2-4x+3的图象;
(3)若A(x1,y1),B(x2,y2)是函数y=x2-4x+3图象上的两点,且x1<x2<1,请比较y1,y2的大小关系。(直接写结果)
(4)把方程x2-4x+3=2的根在函数y=x2-4x+3的图象上表示出来。
答案:
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