设集合A=[0,0.5],B=[0.5,1],函数f(x)={x+0.5,x属于A,2(1—x)x属于B若x0属于A且f[f（x0）]属于A则x0取值范

题目

设集合A=[0,0.5],B=[0.5,1],函数f(x)={x+0.5,x属于A,2(1—x)x属于B若x0属于A且f[f（x0）]属于A则x0取值范
设集合A=[0,0.5],B=[0.5,1],函数f(x)={x+0.5,x属于A,2(1—x)x属于B,若x0属于A,且f[f（x0）]属于A,则x0的取值范围是
A.（0,0.25] B.（0.25,0.5] C.(0.25,0.5) D.[0,0.375]

答案

x0∈A
0