For two real numbers $a , b$ greater than 1, $$\log _ { \sqrt { 3 } } a = \log _ { 9 } a b$$ holds. Find the value of $\log _ { a } b$. [4 points] (1) 1 (2) 2 (3) 3 (4) 4 (5) 5
For two real numbers $a , b$ greater than 1,
$$\log _ { \sqrt { 3 } } a = \log _ { 9 } a b$$
holds. Find the value of $\log _ { a } b$. [4 points]\\
(1) 1\\
(2) 2\\
(3) 3\\
(4) 4\\
(5) 5