设U={1,2,3,4,5},M={x|log2(x2-3x+4)=1},那么CUM=________.
{3,4,5}
分析:由U={1,2,3,4,5},先求出M={x|log2(x2-3x+4)=1}={1,2},再求CUM.
解答:∵U={1,2,3,4,5},
M={x|log2(x2-3x+4)=1}={1,2},
∴CUM={3,4,5}.
故答案为:{3,4,5}.
点评:本题考查集合的运算,解题时要认真审题,由U={1,2,3,4,5},先求出M={x|log2(x2-3x+4)=1}={1,2},再求CUM.