1" alt="\frac{1}{2}log_2(x^2-1)>1" align="absmiddle" class="latex-formula">
2" alt="log_2(x^2-1)>2" align="absmiddle" class="latex-formula">
2^2} \atop {x^2-1>0}} \right" alt="\left \{ {{x^2-1>2^2} \atop {x^2-1>0}} \right" align="absmiddle" class="latex-formula">
5} \atop {x^2>1}} \right" alt="\left \{ {{x^2>5} \atop {x^2>1}} \right" align="absmiddle" class="latex-formula">
+ +
--------'---------'------------>
-sqrt(5) sqrt(5)
Решение: x принадлежит 