来自黄嘉启的问题
【二次函数的解析式两根式顶点式是什么?】
二次函数的解析式两根式顶点式是什么?
1回答
2020-03-19 20:04
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解析式
y=ax²+bx+c
两根式
和x轴交点横坐标是x1,x2
y=a(x-x1)(x-x2)
顶点式
顶点(h,k)
y=a(x-h)²+k
2020-03-19 20:08:24
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