Ответ:
0\ \ \ ,\ \ \ \ (x-1)(x+1)>0\\\\+++(-1)---(1)+++\\\\x\in (-\infty ;-1\, )\cup (\, 1;+\infty )" alt="y=log_3(x^2-1)\\\\ODZ:\ \ x^2-1>0\ \ \ ,\ \ \ \ (x-1)(x+1)>0\\\\+++(-1)---(1)+++\\\\x\in (-\infty ;-1\, )\cup (\, 1;+\infty )" align="absmiddle" class="latex-formula">