二次函数y=a(x+k)2+k,当k取不同的实数值时,图象顶点所在的直线是( ) 发布时间:2017-05-08 18:16 │ 来源:www.tikuol.com 题型:选择题 问题: 二次函数y=a(x+k)2+k,当k取不同的实数值时,图象顶点所在的直线是( )A.y=xB.x轴C.y=-xD.y轴
题型:选择题 Since he is never honest, I have some doubt ________ he said is true. [ ]A. that what B. what that C. whether what D. what if 查看答案