若二元一次方程ax^2+bx+c=0,两个根为x1=-4,x2=2,那么二次函数y=ax^2+bx+c图像的对称轴
若二元一次方程ax^2+bx+c=0,两个根为x1=-4,x2=2,那么二次函数y=ax^2+bx+c图像的对称轴
数学人气:173 ℃时间:2019-08-20 21:31:56
优质解答
对称轴为 x=(-4+2)/2=-1x=-1是吧?是啊。
我来回答
类似推荐
猜你喜欢
- 1我不舍得这里的老师 英文翻译
- 2I have seen her _____,but I can't remember her name.
- 3初中英语八大时态
- 4We arrived in Beijing in six.同义句转换
- 5小红家邻居9月份共缴电费90.4元,请你算算小红家邻居9月份用电多少千瓦时?
- 6didn't you see the film the day before yesterday?— ______.i went to see with my parents
- 7商场出售的A型冰箱每台售价2190元,每日耗电量为1度,而B型节能冰箱每台售价虽比A型冰箱高出10%,但每日耗电量却为0.55度.现将A型冰箱打折出售(打一折后的售价为原价的1/10),问商场
- 8Sam had a good time at the party last momth.(改为一般疑问句 )
- 9如图所示,有一条小路穿过长方形的草地ABCD,若AB=60m,BC=84m,AE=100m,则这条小路的面积是_m2.
- 10英语阅读理解~In today's world many people seem to be hungry for money.Money does have its