(16+a）x^2+2,a为什么,值恒为常数
x^2前的系数16+a等于0,
(16+a)x^2+2 值恒为常数
所以 16+a=0
所以 a=-16
猜你喜欢
- 1英语量的表示法
- 2Where____you last Sunday?
- 3新中国外交取得重大成就的根本原因有哪些
- 4The factory has been ------------- for two years.A.open B.to open Copening D.was in
- 5The plane got back to the airport and landed_____.
- 6Because he works very hard＿＿ he has made very great progress.Aand B so C but D...
- 7已知抛物线y=mx2+(m-3)x-3(m大于3)的顶点为C,与x轴交于A、B两点,点A在点B的左边,且AB=4,圆M过A、B、C三点,求点M的坐标（“x2”指X的二次方）
- 8So Li Fang,tell me,what do you want to be when you're older?
- 9中国各种节日用英语怎么说
- 102x4分之1+4X6分之一+6X8分之一+…+48x50分之一