1.3 交集、并集（学案一）-2020年高中同步教与学数学（江苏版必修1）

书书书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`% ) a % ( % ' 1 ) ! # # *( & '! 1 " "! # #% +, ! 1 ) ! # # ! !" 1 # ! $ # %&'()*+ !" 1 # " ! # # ! !" ! $ # %()*+,-.,&' 1% -. ! ( % ' 21 ) ! # # # R 1 ) # # 31 ) ! # 3&)*%"1 # b ) & "1 # 3)"( # b )"4'% cdX )"( # b )"*'% ( & ' 2 ! 1 " "! # # # 31 ) ! # # # 3)"( # b )"4'% cdX )"*'% /012 ! /$01*+,2345 ! 6789:;< % & =>?#@A14B ! &=>?#@A101*+%CDEF % $ 3456 ! % ! !" ! " " " & 5"*#") "# #" ! " " *"5%") "# ! ! # #"# # [e' * %a % $ * # % ! WX !" ! " " ) & " & )5' "# #" ! " " " + *% b " , ( "# ! ! # #" ( # [ ) %fagh % +, ! G4HIJKL%01MN34 ! OPQRSTU /V % -. ! F ! # #" ( # iXS + Gj ) % *% )5' & ! ( - *% & ) & &% /012 ! WX34&Y:ZB[\]%<^ % $ 3456 # % ! "# !" ! " " *% + " + & "# #" ! " " " , ) "# ! ! # #"! # [e' ) %fagh % &'(7 ! #" !! !"#$% BCDE FG*HA ! bkHA # %-.J4%"# # KL ! ) # %l" # NO ! $ # PQDE ! $ #" ! " " " ) ! # b " ) # " STDE UV ! $ !"! * ! $( "! * ! $ #"# $ ! *( ! $ # ' $ $"! $ ( # $ $ '#( ! $ # ' . ! , % , !"#$%&' ! ()'* " + # ,- !! &'() !! $ * " % ! ! !" ! ) # % "# ! $ #" ! ) # % # & "# mnP#_`%" # #% +, ! _`0%ab ! # cdYe,*+ &% -. ! 2!" ! ) # % "# ! $ #" ! ) # % # & " 3#" ! & "