\[ \log _{ \tfrac {1}{3} }\left ( \frac {1}{3} \right ) = \answer {1} \]
\[ \log _{ \tfrac {1}{3} }(3) = \answer {-1} \]
\[ \log _{ \tfrac {1}{3} }(1) = \answer {0} \]
\[ \log _{ \tfrac {1}{3} }\left ( \frac {1}{9} \right ) = \answer {2} \]
\[ \log _{ \tfrac {1}{3} }(9) = \answer {-2} \]
\[ \log _{ \tfrac {1}{3} }(27) = \answer {-3} \]
\[ \log _{ \tfrac {1}{3} }\left ( \frac {1}{\sqrt {3}} \right ) = \answer {\frac {1}{2}} \]