5.
已知函数
\(g\)\(( \)
\(x\)\()\)是
\(f\)\(( \)
\(x\)\()=\)
\(a^{x}\)\(( \)
\(a\)\( > 0\)且
\(a\)\(\neq 1)\)的反函数,且
\(g\)\(( \)
\(x\)\()\)的图象过点\(\left(\begin{matrix} \begin{matrix}2 \sqrt{2}, \dfrac{3}{2} \end{matrix}\end{matrix}\right)\).
\((1)\)求\(f\)\((\)\(x\)\()\)与\(g\)\((\)\(x\)\()\)的解析式;
\((2)\)比较\(f\)\((0.3)\),\(g\)\((0.2)\)与\(g\)\((1.5)\)的大小.