How do you evaluate log_7 7? Precalculus Properties of Logarithmic Functions Logarithm-- Inverse of an Exponential Function 1 Answer Shwetank Mauria Aug 12, 2016 log_7(7)=1 Explanation: If a^m=b in exponential form, we can write it in logarithmic form as log_ab=m. Let log_7(7)=x and writing it in exponential form, we get 7^x=7=7^1 or x=1 Note - In fact for all values of a, we have log_aa=1 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 5849 views around the world You can reuse this answer Creative Commons License