共50条信息
已知集合\(A=\{x|x < a\}\),\(B=\{x|1\leqslant x < 2\}\)且\(A⊆{C}_{R}B \),则实数\(a\)的取值范围是
已知\(U=\{y/y=\log _{2}x,x > 0\}\),\(P=\{y/y=\dfrac{1}{x},x > 2\}\),则\({{\complement }_{U}}P=(\) \()\)
已知集合\(A=\{0,1,2,3,4,5\}\),集合\(B=\{x∈N| \)\(\dfrac{x-4}{x}\leqslant 0\) \(\}\),则\({{\complement }_{A}}B=\)
已知\(U=\{y/y=\log _{2}x,x > 0)\),\(P=\{y/y=\dfrac{1}{x},x > 2\}\),则\({{\complement }_{U}}P=(\) \()\)
已知集合\(A=\{-2,-1,0,1,2\} \),\(=\{x| \dfrac{x+2}{x-1}\geqslant 0\} \),则\(A∩B =(\) \()\)
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