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若集合=
A.[-1,0] B. C. D.
若集合A={-1,0,1},B={y|y=cosx,x∈A},则A∩B=
{0}
{1}
{0,1}
{-1,0,1}
{-1,01}
若集合A={-1,0,1},B={y|y=2x,x∈A},则A∩B=
若集合A={-1,0,1},B={y|y=cosx,x∈A}则A∩B=
A.{0}
B.{1}
C.{0,1}
D.{-1,0,1}