·设集合A={x/(x-3)(x-a),A∈R} ,B={x/(x-4)(x-1)=0}求AuB,AnB
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![·设集合A={x/(x-3)(x-a),A∈R} ,B={x/(x-4)(x-1)=0}求AuB,AnB](/uploads/image/z/8615119-31-9.jpg?t=%C2%B7%E8%AE%BE%E9%9B%86%E5%90%88A%3D%7Bx%2F%28x-3%29%28x-a%29%2CA%E2%88%88R%7D+%2CB%3D%7Bx%2F%28x-4%29%28x-1%29%3D0%7D%E6%B1%82AuB%2CAnB)
·设集合A={x/(x-3)(x-a),A∈R} ,B={x/(x-4)(x-1)=0}求AuB,AnB
·设集合A={x/(x-3)(x-a),A∈R} ,B={x/(x-4)(x-1)=0}求AuB,AnB
·设集合A={x/(x-3)(x-a),A∈R} ,B={x/(x-4)(x-1)=0}求AuB,AnB
①当a=3时,
AuB={3,1,4},AnB={空集}
②当a=4时,
AuB={3,1,4},AnB={4}
③当a=1时,
AuB={3,1,4},AnB={1}
④当a≠1,3,4时,
A={3,a},B={4,1}
所以,AuB={3,1,4,a},AnB=空集