设全集U=R,M={x|x方-2x-3＜等于0},N={1-x＜0}求M交N,M并N,CuM
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设全集U=R,M={x|x方-2x-3＜等于0},N={1-x＜0}求M交N,M并N,CuM设全集U=R,M={x|x方-2x-3＜等于0},N={1-x＜0}求M交N,M并N,CuM设全集U=R,M
设全集U=R,M={x|x方-2x-3＜等于0},N={1-x＜0}求M交N,M并N,CuM
设全集U=R,M={x|x方-2x-3＜等于0},N={1-x＜0}求M交N,M并N,CuM
设全集U=R,M={x|x方-2x-3＜等于0},N={1-x＜0}求M交N,M并N,CuM
x²-2x-3≤0
(x-3)(x+1)≤0
-1≤x≤3
M={x|-1≤x≤3}
1-x1
N={x|x>1}
M∩N={x|1
设全集U=R,M={x|-3
设全集U=R,M={x|3a
设全集U=R,M={x|x方-2x-3＜等于0},N={1-x＜0}求M交N,M并N,CuM
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