设A={x|x2-2x-8<0},B={x|x2+2x-3>0}, (1)若C=
题型:解答题
问题:
设A={x|x2-2x-8<0},B={x|x2+2x-3>0},
(1)若C={x|x2-3ax+2a2<0},试求实数a的取值范围,使C⊆A且C⊆B;
(2)若C={x|x2-3ax+2a<0},试求实数a的取值范围,使C⊆A且C⊆B.
设A={x|x2-2x-8<0},B={x|x2+2x-3>0},
(1)若C={x|x2-3ax+2a2<0},试求实数a的取值范围,使C⊆A且C⊆B;
(2)若C={x|x2-3ax+2a<0},试求实数a的取值范围,使C⊆A且C⊆B.