[问答题]
1. Write down the domain and range of the logarithmie4 6uhvtlxri vlc1 ,4h7 h3y1wc funcz afad *:e 7 e1hhfs7bfuco3 a(3tq62bd.yzr6tion $y=\log _{a}$ x where a>0 and $a \neq 1$ .
2. Given that $\log _{x^{2}} y=9 \log _{y}\left(x^{2}\right)$ , find all the possible expressions of y as a function of x .
