设集合A=(x/(X-3)(X-a0=0 a属于R),b=(x/(x-4)(x-1)=o)求A和B的并集和交集.

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设集合A=(x/(X-3)(X-a0=0a属于R),b=(x/(x-4)(x-1)=o)求A和B的并集和交集.设集合A=(x/(X-3)(X-a0=0a属于R),b=(x/(x-4)(x-1)=o)求

设集合A=(x/(X-3)(X-a0=0 a属于R),b=(x/(x-4)(x-1)=o)求A和B的并集和交集.
设集合A=(x/(X-3)(X-a0=0 a属于R),b=(x/(x-4)(x-1)=o)求A和B的并集和交集.

设集合A=(x/(X-3)(X-a0=0 a属于R),b=(x/(x-4)(x-1)=o)求A和B的并集和交集.
设集合A=(x/(X-3)(X-a0=0 a属于R),b=(x/(x-4)(x-1)=o)求A和B的并集和交集.
(x-3)(x-a)=0 得x=3,x=a
(x-4)(x-1)=0 得x=4,x=1
所以A={3,a} B={4,1}
若a=4,或a=1时.
A,B的交集为{4}或{1}
A,B的并集为{3,4,1}
若a不等于4,且不等于1
A,B的交集为空集
A,B的并集为{3,a,4,1}