挑战习题
1/5单选题
难度:

1.二次函数y=ax2+bx+c图象上部分点的坐标满足下表:
x -3 -2 -1 0 1
y -3 -2 -3 -6 -11
则该函数图象的顶点坐标为()
A (-3,-3)
B (-2,-2)
C (-1,-3)
D (0,-6)
提示1:
IOagueaNruS6jOasoeWHveaVsOeahOWvueensOaAp+ehruWumuWHuuS6jOasoeWHveaVsOeahOWvueensOi9tO+8jOeEtuWQjuino+etlOWNs+WPry4=
正确答案:Qg==
6Kej77ya4oi1eD0tM+WSjC0x5pe255qE5Ye95pWw5YC86YO95pivLTPnm7jnrYnvvIw8YnI+4oi05LqM5qyh5Ye95pWw55qE5a+556ew6L205Li655u057q/eD0tMu+8jDxicj7iiLTpobbngrnlnZDmoIfkuLrvvIgtMu+8jC0y77yJLiA8YnI+5pWF6YCJQi4g