determine the equation of a quadratic functionconditions:x-intercept 3,and passing through the point (1,-2)
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/26 12:48:52
determine the equation of a quadratic functionconditions:x-intercept 3,and passing through the point (1,-2)
determine the equation of a quadratic function
conditions:x-intercept 3,and passing through the point (1,-2)
determine the equation of a quadratic functionconditions:x-intercept 3,and passing through the point (1,-2)
It sounds like that it passes thru 3 points: (0,0),(3,0),(1,-2)
From the first 2 points,it can be expressed in the form of y = ax(x-3)
It passes thru (1 -2):-2 = a*1*(1-3)
a = 1
y = x(x-3)
y = ax^2 + bx + c
c = 3
y(1) = a + b + 3 = -2
a+b = -5
you only got two conditions and the quadratic function can't be determined
这题就是说 二次函数的x截值为3,并经过点(1,-2)
换言之这条抛物线经过(1,-2),(3,0)
现在会做了吗?
我最近也在学这个 我在saskatoon的高中
这是pre calculate 20 的第四章吧还少一个点呀 怎么做呀 我现在学12年级高等函数 这是前面的复习题...
全部展开
这题就是说 二次函数的x截值为3,并经过点(1,-2)
换言之这条抛物线经过(1,-2),(3,0)
现在会做了吗?
我最近也在学这个 我在saskatoon的高中
这是pre calculate 20 的第四章吧
收起