How do I find the logarithm #log_3 1/81#? Precalculus Properties of Logarithmic Functions Logarithm-- Inverse of an Exponential Function 1 Answer Kevin B. Apr 4, 2015 The answer is #0#. #log_3(1)# is the same as saying #3# to the what power is #1#? Anything to the 0th power is #1#, so #log_3(1) = 0# #0/81# is simply #0#. Answer link Related questions What is a logarithm? What are common mistakes students make with logarithms? How can a logarithmic equation be solved by graphing? How can I calculate a logarithm without a calculator? How can logarithms be used to solve exponential equations? How do logarithmic functions work? What is the logarithm of a negative number? What is the logarithm of zero? How do I find the logarithm #log_(1/4) 1/64#? How do I find the logarithm #log_(2/3)(8/27)#? See all questions in Logarithm-- Inverse of an Exponential Function Impact of this question 3626 views around the world You can reuse this answer Creative Commons License