已知抛物线y=﹣2x2+bx+c经过点A(﹣1,﹣3)和点B(2,3)
(1)求这条抛物线所对应的函数表达式.
(2)点M(x1,y1)、N(x2,y2)在这条抛物线上,当1≤x2<x1时,比较y1与y2的大小.
(1)求这条抛物线所对应的函数表达式.
(2)点M(x1,y1)、N(x2,y2)在这条抛物线上,当1≤x2<x1时,比较y1与y2的大小.
19-20九年级上·吉林长春·期末 查看更多[2]
更新时间:2019-02-16 11:14:52
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(2)已知点
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(3)在(2)的条件下,如果点
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【推荐2】已知
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【推荐1】如图,抛物线
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【推荐2】如图1,在立柱上竖直安装了一个喷水装置
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