Question

Va rog 12
Dau Corona

Answer 1

Răspuns:

A={1,2,3,4}

y=x²-1

y=1²-1=1-1=0

y=2²-1=4-1=3

y=3²-1=9-1=8

y=4²-1=16-1=15

B={0,3,8,15}

z=6-x

z=6-1=5

z=6-2=4

z=6-3=3

z=6-4=2

C={2,3,4,5}

a) (AnB)U(BnC)={3}U{3}={3}

b) (A-C)n(C-B)={1}n{2,4,5}=0

c) (AUC)-(BnA)={1,2,3,4,5}-{3}={1,2,4,5}

d) (B-C)U(A-B)={0,8,15}U{1,2,4}={0,1,2,4,8,15}