Question

集合A=｛-1,3,2m-1｝,集合B=｛m²｝.若B包含于A,则实数m=

Answer 1

m²=3,m=3或m=-3;

m=3时,2m-1=5,可行;

m=-3时,2m-1=-7,可行;

当m²=2m-1,得m=1,可行;

故,m=1或m=3或m=-3;