How do you find the exact value of #log_3(81)#? Precalculus Properties of Logarithmic Functions Common Logs 1 Answer Ananda Dasgupta Mar 21, 2018 4 Explanation: To find the value of #x = log_3 81# we need to find #x# such that #3^x = 81# Now #3^1 = 3# #3^2 = 9# #3^3 = 27# #3^4 = 81# Thus #x=4# Answer link Related questions What is the common logarithm of 10? How do I find the common logarithm of a number? What is a common logarithm or common log? What are common mistakes students make with common log? How do I find the common logarithm of 589,000? How do I find the number whose common logarithm is 2.6025? What is the common logarithm of 54.29? What is the value of the common logarithm log 10,000? What is #log_10 10#? How do I work in #log_10# in Excel? See all questions in Common Logs Impact of this question 6802 views around the world You can reuse this answer Creative Commons License