将点m、n的坐标代入解析式可得:
1+b+c=-2 ·····················1
1-b+c=6························2
联立1、2两式解得:
b=-4,c=1
所以可得此函数的解析式为:
y=x²-4x+1
将点m、n的坐标代入解析式可得:
1+b+c=-2 ·····················1
1-b+c=6························2
联立1、2两式解得:
b=-4,c=1
所以可得此函数的解析式为:
y=x²-4x+1