Question

VA ROGG DAU COROANAAA AM NEVOIEE​

Answer 1

Explicație pas cu pas:

$0 \leqslant n + 1 < 5 \ \iff - 1 \leqslant n < 4 \\ n \geqslant 1 \implies n \in \{1; 2; 3\}$

=> A = {1; 2; 3}

$13 < {x}^{2} - 1 \leqslant 99 \iff 14 < {x}^{2} \leqslant 100$

=> B = {4; 5; 6; 7; 8; 9; 10}

a ∈ {1; 3; 5; 7; 9} => y ∈ {2¹; 2³; 2⁵; 2⁷; 2⁹}

=> C = {2; 8; 32; 128; 512}