如果函数y=x2-ax+1的自变量x的取值范围是全体实数,则a的取值范围是___ 发布时间:2017-04-27 20:21 │ 来源:www.tikuol.com 题型:填空题 问题: 如果函数y=x2-ax+1的自变量x的取值范围是全体实数,则a的取值范围是______.
题型:填空题 —How is it from here to your home?—It's about _________. [ ]A. five minute walk B. five minutes' walkC. five minute walks D. five minutes' walks 查看答案