设U=R,A={x|a≤x≤b},CuA={x|x>4或x<3},则a=___,b=___.
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设U=R,A={x|a≤x≤b},CuA={x|x>4或x<3},则a=___,b=___.
设U=R,A={x|a≤x≤b},CuA={x|x>4或x<3},则a=___,b=___.
设U=R,A={x|a≤x≤b},CuA={x|x>4或x<3},则a=___,b=___.
∵U=R
CuA={x|x>4或x<3},
∴A=Cu(CuA)={x│3≤x≤4}
={x|a≤x≤b},
∴a=3
b=4