Question

Doi la puterea X plus unu mai mic sau egal cu 16

Answer 1

$2^{x+1} \leq 16 \ \textless \ =\ \textgreater \ 2^{x+1} \ \leq 2^4 \ \textless \ =\ \textgreater \ x+1 \leq 4 \ \textless \ =\ \textgreater \ x \leq 3;$
x ∈(-∞;3]