C 3 3 3 3 3   3X XLOG 3LOG .      2 2 2 21 2 1...

Câu 36. C



3 3 3 3 3

   

3

x x

log 3log .

     

2

2

 

2 2

1 2 1 2

ab ab

 

 

a b

log log 2

ab

log

x xx

log log

a b