设全集U=R,M={x|x>1},N={x|-1≤x≤3},则(补集M)∪(补集N)=

设全集U=R,集合M={x/x^2>9},N={-1 设全集U=R,M={x|x≥1},N={x|>5或x 设全集U是实数集R,M={x|x^2>4},N={x|log2(x-1) 设全集U=R,M={x|-3 设全集U=R,M={x|3a 设全集U是实数集R,M={x|x^2>4},N={x|1 设全集U=R,A={x|1/x 设全集U=R,集合M={x|f(x)=0},N={x|g(x)=0} 设全集U是实数集R,M={x|x2},N={x|x^2-4x+3 设全集U=R,M={x|x>1},N={x|-1≤x≤3},则(补集M)∪(补集N)= 设全集U=R,集合A={X|-1 设全集U=R,集合A={x|-1 设全集U=R,集合A={x/1 设全集U=R,A={x|-1 设全集U=R,集合A=(x|-1 设全集U=R,集合A={x|-1 设全集U=R,集合A=（X|-1 设全集为R,集合M={x|2x>x+3},N={x|-1