已知U={2,3,4,5,6,7},M={3,4,5,7},N={2,4,5,6},则
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已知U={2,3,4,5,6,7},M={3,4,5,7},N={2,4,5,6},则
已知U={2,3,4,5,6,7},M={3,4,5,7},N={2,4,5,6},则
已知U={2,3,4,5,6,7},M={3,4,5,7},N={2,4,5,6},则
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已知4U-u=6U+2u=14求U,u的值
已知全集U={1,2,3,4,5,6,7,},A={1,3,5,7},B={3,5}则A.U=A U B B.U=(CuA) U BC.U=A U(CuB)D.U=(CuA)U(CuB)
已知全集U={1,2,3,4,5,6,7,8},M={1,3,5,7},N={5,6,7},则(u(M∪N)=
已知U={不大于20的质数,M包含U,N包含U,M交集于(N在u中的补集)={3,5},(M在u中的补集)交集于N={7,19},...已知U={不大于20的质数,M包含U,N包含U,M交集于(N在u中的补集)={3,5},(M在u中的补集)交集于N=
已知U={1,2,3,4},A={x|x^2-5x+m=0,x属于U},求CuA、m
已知全集U={4,m²+2m-3,19},集合A={5},若CuA={|4m-3|,4},求实数m的值
已知U={2,3,4,5,6,7},M={3,4,5,7},N={2,4,5,6},则
1.已知全集U={1,2,3,4},A={xlx^2-5x+m,x=0,x属于U},求CuA,m2.已知全集U={xl-1
{u+U=10,3u-2U=5
已知2u-t=3u+2t=5,求u,t的值
已知全集U={1,2,3,4}A={X/X平方_5X+m=0 X属于U} 求CuA m
已知复数Z1=m+(4-m^2)*i (m属于R),和Z2=2cosa+(u+3sina)i(u属于R),若Z1=Z2求u的取值范围2如题..急用!
已知U={1,2,3,4,5,6,7}M={3,4,5}N={1,3,6}则集合{2,7}=__(用M,N表示)
已知全集U={3,6,k^2+3k+5},A={3,k+8},A的补集={4m-5},求集合A
已知全集U={3,6,k^2 +3+5},A={3,k+8},CuA={4m-5}求集合A
已知全集U={2,4,6,8,10},集合M,N满足M交N={4},N的补集交M={10},求M
已知全集U=={1,2,3,4,5},A={x满足 x平方减5x加m=0 },A包含于U,求A的补集 及 m的值.
已知全集U={1,2,3,4},且A={x丨x²-5x+m=0},若补集A{2,3},求m的值.