共50条信息
已知集合\(A=\{x|x^{2}-x-2 > 0\}\),则\(C_{R}A=\)
已知集合\(A=\left\{ x|{{x}^{2}}-3x+2=0 \right\}\),\(B=\left\{ x|x > 1 \right\}\),则\(A∩{C}_{R}B= (\) \()\)
设集合\(A=\left\{x \left|y={\log }_{2}\left(2-x\right) \right.\right\} \),\(B=\left\{x \left|{x}^{2}-3x+2 < 0 \right.\right\} \),则\({C}_{A}B (\) \()\)
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