[问答题]
1. Write down the domain and range of the logarithmic f ngwt.i38ba9b3-lnn-xu :v hdunctzip;; :mv*tqyion $y=\log _{a}$ 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 .
