For three real numbers $a , b , c$ greater than 1, when $\log _ { a } c : \log _ { b } c = 2 : 1$, what is the value of $\log _ { a } b + \log _ { b } a$? [3 points] (1) 1 (2) $\frac { 3 } { 2 }$ (3) 2 (4) $\frac { 5 } { 2 }$ (5) 3
For three real numbers $a , b , c$ greater than 1, when $\log _ { a } c : \log _ { b } c = 2 : 1$, what is the value of $\log _ { a } b + \log _ { b } a$? [3 points]\\
(1) 1\\
(2) $\frac { 3 } { 2 }$\\
(3) 2\\
(4) $\frac { 5 } { 2 }$\\
(5) 3