关于x的一元二次方程(m-1)x2-2mx+m=0有两个实数根,那么m的取值范围 发布时间:2017-04-20 11:43 │ 来源:www.tikuol.com 题型:选择题 问题: 关于x的一元二次方程(m-1)x2-2mx+m=0有两个实数根,那么m的取值范围是( )A.m>0B.m≥0C.m>0且m≠1D.m≥0,且m≠1
题型:选择题 A. I have to study hard now.B. No, you needn’t. I just went to bed late last night.C. Yeah. I’ll never do that again.D. I have a pain(疼痛) in my head.E. You’d better learn from others.F. Oh, no. I have to stay up again.G. Thanks a lot.A: Tom, you look tired today. Are you all right?B: 小题1: .A: Sorry to hear that. I’ll phone the doctor.B: 小题2: . I was getting ready for the coming exam.A: You’d better go to bed earlier tonight.B: 小题3: . Because I don’t have enough time to go over all the subjects.A: Why? Must you study that way? It is bad for your health.B: But I played too much last month. 小题4: .A: I see, Tom. You’ve learned something from the past, haven’t you?B: 小题5: .A: Good. I believe(相信) you. 查看答案
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