共50条信息
已知全集\(U=\left\{2,3,4,5,6,7\right\} \),\(M=\left\{3,5,7\right\} \),\(N=\left\{2,3,4,5\right\} \),则图中的阴影部分表示的集合是
设集合\(P=\{x|x^{2}-4x+3\leqslant 0\}\),\(Q=\{x|x^{2}-4 < 0\}\),则\(P\bigcup ({{\complement }_{R}}Q)=\)
已知集合\(A=\{x|x < 1\}\),\(B=\{x|e^{x} < 1\}\),则
设 \(U=R\),集合\(A=\{x|x^{2}+3x+2=0\}\),\(B=\{x|x^{2}+(m+1)x+m=0\}\);若\({C}_{U}A∩B=ϕ \),则 \(m=(\) \()\)。
设全集\(U{=}\{ 1{,}2{,}3{,}4{,}5\}\),集合\(A{=}\{ 1{,}3{,}5\}\),集合\(B{=}\{ 3{,}4\}\),则\(({{∁}}_{U}A){∩}B{=}({ })\)
已知全集\(U=\left\{ x\in Z|{{x}^{2}}-5x-6 < 0 \right\},A=\left\{ x\in Z\left| -1 < x\leqslant 2 \right. \right\}\),\(B=\left\{ 2,3,5 \right\}\),则\(\left( {{\complement }_{U}}A \right)\bigcap B=\) \((\) \()\)
已知全集\(U=\{1,2,3,4,5,6\}\),集合\(A=\{2,3,5\}\),\(B=\{1,3,4,6\}\),则\(A\bigcap \left( {{C}_{U}}B \right)=(\) \()\)
若集合\(A=\{y|0\leqslant y < 2\}\),\(B=\{x||x| > 1\}\),则\(A∩(∁RB)=\)( )
设\(U=R\),\(A=\left\{x|y= \sqrt{x}\right\},B=\left\{y|y=-{x}^{2}\right\} \),则\(A∩(∁_{U}B)=(\) \()\)
已知全集\(U=R\),集合\(A=\{x\left| {{x}^{2}} > 2x+3 \right.\}\),\(B=\{x\left| {{\log }_{3}}x > 1 \right.\}\),则下列关系正确的是
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