2. Find all integers that belong to the domain of the function $\arccos \ln \frac{|x|+2}{2}+\ln \cos x$. List the answers in ascending order, separated by a semicolon.

Examples of answer format:

1

$0 ; 1$
Answer: $-1 ; 0 ; 1\|-1,0,1\| 1 ; 0 ;-1 \| 1,0,-1$