中职1.3.2集合的运算教案

1.31212312342(90)1BxAxxBABxAxxBA231,0,1,2A0,2,4,6BABAB|22Axx,|04BxxABAB10*U={}P={}Q={}PQU,QUP15*URAUUAAUAUUAeAU|UAxxUxAeUURUUAeAeAAUAU20*10,1,2,3,4,5,6,7,8,9U1,3,4,5A3,5,7,8BAUeBUeAUA0,2,6,7,8,9AeU0,1,2,4,6,9BeU2UR|12Axx,AeAAe|12Axxx,e-1A-1Ae2A2AeAAUAe)=AUAe)=UUUe=Ue=UUe(UAe)=A35*1.3.31U10147AUAe2UR=|24AxxAe45*12355*30,1,2,3,4,5,6,7,8,9U1,3,4,5A3,5,7,8BAUeBUeABUUUUABUABeABeU0,2,6,7,8,9AeU0,1,2,4,6,9BeU0,2,6,9UUAB0,1,2,4,6,7,8,9UUAB3,5AB0,1,2,4,6,7,8,9UABe1,3,4,5,7,8AB0,2,6,9UABe4U=RA={x|x2}B={x|x-4}UAe,UBeABABU=RA={x|x2}UAe={x|x2}U=RB={x|x-4}UBe={x|x-4}{42}ABxxAB=R70*11,2,3,4,5,6,7,8U2,4,6A3,4,5BABABUAeUBeUUABUUAB2.|0180U|090A|90180BUAeUBeUUABUUAB80**85*(1)1.31.3(2)1.3(3)90