Determinati A∪B ,A∩B ,A-B si B-A specificand si cardinalul lor;a)A={x,y,z,t} ; B={a,b,x,y}.b) A={m,n,p,} ; B={q,r} ;c) A=={10,20,30,40} ;B=={2x5 ; 3x10 ; 2x10 ; 2x40}
d) A= {nЄN/n x≤7} ; B= {nЄN/n este cifra para} ;
e) A= {nЄN/n=2xp ; pЄN; p≤5 }
B= {mЄN/m=3xq ; qЄN ; q≤3}
f)A={xЄN/m=5x-1≤14} ;B={yЄN/y=x+1 ; xЄN} ;
g) A={xЄN/m=5x≤125} ; B={yЄN/y=5≤4x≤64} ;(la A=....5 puterea x .....la b= ....4 la puterea x)
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