1003124601

SubArea: 
Rational Functions
Level: 
B
Project ID: 
1003124601
Accepted: 
1
Clonable: 
0
Easy: 
0
Let \( f(x)=\frac{2x}{x^2-1} \). Find the true statement.
\( \forall x\in(-\infty,-1)\cup(0,1)\colon f(x) < 0 \).
The domain of \( f \) is \( (-\infty,1)\cup(1,\infty) \).
\( \forall x\in(-1,1)\colon f(x) \leq 0 \).
The domain of \( f \) is \( (-\infty,-1)\cup(-1,0)\cup(0,1)\cup(1,\infty) \).