已知不等式的解集为A,关于的不等式的解集为B。(1)求集合A;(2)

已知不等式的解集为A,关于的不等式的解集为B

1)求集合A(2),求实数a的值;w.w.w.k.s.5.u.c.o.m    

(3)若,求实数a的取值范围.

答案

解析:(1)集合A=…….4

 (2)

 ……….8

(3),

则实数a的取值范围为…………….12

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