1,设A=(X | X²+4x=0),B=(x | x²+2(a+1)x+a²-1=0),其中x∈R,如果A∩B=B,求实数a的取值范围2、 已知集合A=(x | x²-6x+8<0)B=( x| ( x-a)(x-3a)<0)1)若A包含于B,求a 的取值范围2)若A∩B=(x|
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![1,设A=(X | X²+4x=0),B=(x | x²+2(a+1)x+a²-1=0),其中x∈R,如果A∩B=B,求实数a的取值范围2、 已知集合A=(x | x²-6x+8<0)B=( x| ( x-a)(x-3a)<0)1)若A包含于B,求a 的取值范围2)若A∩B=(x|](/uploads/image/z/4326939-27-9.jpg?t=1%2C%E8%AE%BEA%3D%28X+%7C+X%26%23178%3B%2B4x%3D0%29%2CB%3D%28x+%7C+x%26%23178%3B%2B2%EF%BC%88a%2B1%29x%2Ba%26%23178%3B-1%3D0%29%2C%E5%85%B6%E4%B8%ADx%E2%88%88R%2C%E5%A6%82%E6%9E%9CA%E2%88%A9B%3DB%2C%E6%B1%82%E5%AE%9E%E6%95%B0a%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B42%E3%80%81+%E5%B7%B2%E7%9F%A5%E9%9B%86%E5%90%88A%3D%EF%BC%88x+%7C+x%26%23178%3B-6x%2B8%EF%BC%9C0%EF%BC%89B%3D%EF%BC%88+x%7C+%28+x-a%29%EF%BC%88x-3a%EF%BC%89%EF%BC%9C0%EF%BC%891%EF%BC%89%E8%8B%A5A%E5%8C%85%E5%90%AB%E4%BA%8EB%2C%E6%B1%82a+%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B42%EF%BC%89%E8%8B%A5A%E2%88%A9B%3D%EF%BC%88x%7C)
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