Question

Se dau multimile A={×apartineN/x< sau egal6};B={×apartineN/2*<70};C={×partineN/2<sau egalx+2<sau egal 8} sunt egale multimile?

Answer 1

multimea A = {0,1,2,3,4,5,6}
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[tex] 2^{x} \ \textless \ 70; 2^{2}=4 . . 2^{6}=64 [/tex]

deci multimea B= { 0,1,2,3,4,5,6}
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$2 \leq (x+2) \leq 8$ 

Scad un 2 inecuatiei si obtin:
$0 \leq x \leq 6$

deci multimea C={0,1,2,3,4,5,6}

Concluzie: cele 3 multimi sunt egale

Answer 2

A={0,1,2,3,4,5,6}   B={0,1,2,3,4,5.....,69}    C={0,1,2,3,4,5,6}                              Toate multimile sunt egale