设全集U=R,A={y|y=tan x ,x∈B｝,B=｛x| |x|≤π/4 ｝,则图中阴影部分表示的集合是 A .[-1,1] B.[-π/4,π/4] C.[-1,-π/4)∪（π/4 ,1] D.[ -1,-π/4]∪[ π/4 ,1]

设全集U=R,F={Y|Y=X^2-2X,-1 设全集U=R,集合A=x|x 设全集U=R,集合A={X|X 设全集U=R,集合A={X//X/ 设全集U=R,A={x|1/x 设全集U=R,A={x|x 设全集U=R,集合A={X|X 设全集U=R,A={x|a 设全集U=R,A={x|a 设全集U=R,函数y=lg(2-x)的定义域为A,则CuA等于 已知全集U=R,A={y|y=e^x,x 设全集U=R,集合A={x|-5 设全集U=R,集合A={x|-5 设全集U=R,集合A={X|-1 设全集U=R,集合A={x|0 设全集U=R,集合A={x|-1 设全集U=R,集合A=｛x|-5 设全集U=R,A={x|-5