已知二次函数y=ax2+bx+c的图象过(1,-1)、(2,1)、(-1,1)三 发布时间:2017-05-12 10:11 │ 来源:www.tikuol.com 题型:解答题 问题: 已知二次函数y=ax2+bx+c的图象过(1,-1)、(2,1)、(-1,1)三点,求二次函数的解析式.
题型:解答题 When we arrived in the middle of the night,there was no food as all the shops were shut.A.leftB.availableC.remainingD.convenient 查看答案