1.已知集合A={a,a+d,a+2d},B={a,aq,aq²},其中a,d,q∈R,若A=B,求q的值.2.已知全集U={2,3,a²+2a-3},若A={b,2},CuA={5},求实数的a,b值.3.若集合S={3,a²},T={x | 0<x+a<3,x∈Z}且S∩T={1},P
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![1.已知集合A={a,a+d,a+2d},B={a,aq,aq²},其中a,d,q∈R,若A=B,求q的值.2.已知全集U={2,3,a²+2a-3},若A={b,2},CuA={5},求实数的a,b值.3.若集合S={3,a²},T={x | 0<x+a<3,x∈Z}且S∩T={1},P](/uploads/image/z/14885320-40-0.jpg?t=1.%E5%B7%B2%E7%9F%A5%E9%9B%86%E5%90%88A%3D%EF%BD%9Ba%2Ca%2Bd%2Ca%2B2d%EF%BD%9D%2CB%3D%EF%BD%9Ba%2Caq%2Caq%26%23178%3B%EF%BD%9D%2C%E5%85%B6%E4%B8%ADa%2Cd%2Cq%E2%88%88R%2C%E8%8B%A5A%3DB%2C%E6%B1%82q%E7%9A%84%E5%80%BC.2.%E5%B7%B2%E7%9F%A5%E5%85%A8%E9%9B%86U%3D%EF%BD%9B2%2C3%2Ca%26%23178%3B%2B2a-3%EF%BD%9D%2C%E8%8B%A5A%3D%EF%BD%9Bb%2C2%EF%BD%9D%2CCuA%3D%EF%BD%9B5%EF%BD%9D%2C%E6%B1%82%E5%AE%9E%E6%95%B0%E7%9A%84a%2Cb%E5%80%BC.3.%E8%8B%A5%E9%9B%86%E5%90%88S%3D%EF%BD%9B3%2Ca%26%23178%3B%EF%BD%9D%2CT%3D%EF%BD%9Bx+%7C+0%EF%BC%9Cx%2Ba%EF%BC%9C3%2Cx%E2%88%88Z%EF%BD%9D%E4%B8%94S%E2%88%A9T%3D%EF%BD%9B1%EF%BD%9D%2CP)
1.已知集合A={a,a+d,a+2d},B={a,aq,aq²},其中a,d,q∈R,若A=B,求q的值.2.已知全集U={2,3,a²+2a-3},若A={b,2},CuA={5},求实数的a,b值.3.若集合S={3,a²},T={x | 0<x+a<3,x∈Z}且S∩T={1},P
1.已知集合A={a,a+d,a+2d},B={a,aq,aq²},其中a,d,q∈R,若A=B,求q的值.
2.已知全集U={2,3,a²+2a-3},若A={b,2},CuA={5},求实数的a,b值.
3.若集合S={3,a²},T={x | 0<x+a<3,x∈Z}且S∩T={1},P=S∪T,求集合P的所有子集.
4.已知集合A={x | 3≤x≤7},B={x | 2<x<10},C={x | x<a},全集为实数集R.
(1) 求A∪B,(CRA)∩B; (2) 如果A∩C≠空集,求a的取值范围.
5.已知方程x²+px+q=0的两个不相等实根为a,β.集合A={a,β},B={2,4,5,6},C={1,2,3,4},A∩C=A,A∩B=空集,求p,q的值.
1.已知集合A={a,a+d,a+2d},B={a,aq,aq²},其中a,d,q∈R,若A=B,求q的值.2.已知全集U={2,3,a²+2a-3},若A={b,2},CuA={5},求实数的a,b值.3.若集合S={3,a²},T={x | 0<x+a<3,x∈Z}且S∩T={1},P
1,第一种情况a+d=aq,a+2d=aq²,得q=1;第二种a+d=aq²,a+2d=aq,得q=1或0.5.
2由题知a²+2a-3=5,所以a=2或-4,b=3
3,S∩T={1},所以a²=1,又因为 0<x+a<3,x=1时成立,所以a=1,S={3,1},T={0,1},P={3,1,0},子集你自己写吧
4A∪B={x | 2<x<10},(CRA)∩B={x | x≤2,10≤x},a>3
5,A∩C=A,A∩B=空集,所以A={1,3},q=3,p=2