问题 填空题

已知p:|x-3|≤2,q:(x-m+1)(x-m-1)≤0,若¬p是¬q的充分而不必要条件,则实数m的取值范围为______.

答案

∵log2|1-

x-1
3
|>1;

∴:|x-3|≤2,即-2≤x-3≤2,

∴1≤x≤5,

设A=[1,5],

由:(x-m+1)(x-m-1)≤0,

得m-1≤x≤m+1,

设B=[m-1,m+1],

∵¬p是¬q的充分而不必要条件,

∴q是p的充分而不必要条件,

则B是A的真子集,

m-1≥1
m+1≤5

m≥2
m≤4

即2≤m≤4,

故答案为:[2,4].

完形填空
完形填空。

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单项选择题 A1/A2型题