[问答题]
1. Write down the domaiq(dpm*9y 7nv9-u cb zvn.whk/9l(b hbw)s w)6cme1 zy r and range of the logarithmic function $y=\log _{a}$ 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 .