Evaluate $\log_\frac{1}{3}9$.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Evaluate $\log_\frac{1}{3}9$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
-2
Evaluate $\log_\frac{1}{3}9$.
train