设全集是实数集R,A={X|1/2≤X≤3},B=｛X|X+a
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设全集是实数集R,A={X|1/2≤X≤3},B=｛X|X+a设全集是实数集R,A={X|1/2≤X≤3},B=｛X|X+a设全集是实数集R,A={X|1/2≤X≤3},B=｛X|X+a-1/4
设全集是实数集R,A={X|1/2≤X≤3},B=｛X|X+a
设全集是实数集R,A={X|1/2≤X≤3},B=｛X|X+a
设全集是实数集R,A={X|1/2≤X≤3},B=｛X|X+a
-1/4
设全集是实数集R,A={X|1/2≤X≤3},B=｛X|X+a
设全集是实数集R,A={X|1/2≤X≤3},B=｛X|X+a
设全集是实数集R,A={X|1/2≤X≤3},B={X|X2 a
设全集是实数集R,A={X|2X.X-7X+3
设全集是实数集R,A={X|1/2≤X≤3},B=｛X|X²+a
设全集是实数集R,A={X|1/2≤X≤3},B=｛X|X²+a
设全集是实数集R,A={X|1/2≤X≤3},B=｛X|X²+a
设全集是实数集R,集合A={x│1/2≤x≤3},B={x|x的绝对值+a
设全集是实数集R,A={x|2x^2-7x+3
设全集是实数集R,A=｛x丨2x²-7x+3≤0｝,B=｛x丨x²+a
设全集是实数集R,M={x|-2≤x≤2},N={x|x
设全集是实数集R,A={X|2x^2-7x+3≤0},B={X|y^2+a
设全集是实数集R,A={X|2x^2-7x+3≤0},B={X|y^2+a
设全集是实数集R,A={x丨2x-7x+3≤0},B={x丨x+a＜0}[1]当a=-4时,求A∩B和A∪B
设全集是实数R,A={x|2x^2-7x+3≤0},B={x|x^2+a
设全集是实数R,A={x丨2x²-5x-3≤0},B={x丨x²+a
设全集是实数集R,A={x|2x²-7x+3≤0}……设全集是实数集R,A={x|2x²-7x+3≤0},B={x|x²-4＜0},求A∩B和A∪B.
设全集U是实数集R,M={x|x^2>4},N={x|log2(x-1)