Question

va rog dau coroana si 50 puncte​

Answer 1

Explicație pas cu pas:

${2}^{x} < 30 \\ {2}^{4} = 16 \: si \: {2}^{5} = 32 \iff {2}^{4} < 30 < {2}^{5} \\ \implies 0 < x \leqslant 4$

A = {1, 2, 3, 4}

${x}^{3} < 30 \\ {3}^{3} = 27 \: si \: {4}^{3} = 64 \iff {3}^{3} < 30 < {4}^{3} \\ \implies 0 \leqslant x \leqslant 3$

B = {0, 1, 2, 3}

$\implies A \cap B = \{1, 2, 3\}$