p4x的精选

问题详情：设命题p:(4x-3)2≤1;命题q:x2-(2a+1)x+a(a+1)≤0,若﹁p是﹁q的必要不充分条件,求实数a的取值范围.【回答】由(4x-3)2≤1,得≤x≤1,令A=.由x2-(2a+1)x+a(a+1)≤0,得a≤x≤a+1,令B={x|a≤x≤a+1}.由﹁p是﹁q的必要不充...