How do you evaluate log_343 49? Precalculus Properties of Logarithmic Functions Logarithm-- Inverse of an Exponential Function 1 Answer ali ergin Oct 23, 2016 log_343 49=2/3 Explanation: "change the base 243 to base 7" log_343 49=(log_7 49)/(log _7 343)=(log _7 7^2)/(log_7 7^3)=(2*log 7)/(3*log_7 7) log _7 7=1 log_343 49=(2*1)/(3*1) log_343 49=2/3 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 3655 views around the world You can reuse this answer Creative Commons License