How do you evaluate #log_169 13#? Precalculus Properties of Logarithmic Functions Logarithm-- Inverse of an Exponential Function 1 Answer A. S. Adikesavan Aug 10, 2016 #1/2# Explanation: Use log_b a=log_c a/log_c# Here, # log_169 13# #=ln 13/ln 169# #=ln 13/ln 13^2# #=ln 13/(2ln 13)# #=1/2#. 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 5828 views around the world You can reuse this answer Creative Commons License