2000002401

SubArea: 
Properties of functions
Level: 
B
Project ID: 
2000002401
Accepted: 
0
Clonable: 
0
Easy: 
0
Find the domain of the function \( f(x) = \sqrt{ \frac{1-x}{x+1}}\).
\( ( -1 ; 1 ] \)
\( ( -1 ; 1 ) \)
\( \mathbb{R} \setminus \{ -1;1\} \)
\( ( -\infty ; 1) \cup [ 1; \infty) \)