How do you simplify #5 ln (1/e^2)#? Precalculus Properties of Logarithmic Functions Common Logs 1 Answer Alan P. Apr 20, 2016 #5ln(1/(e^2))=color(green)(-10)# Explanation: Remember: #ln a = k# is equivalent to #e^k=a# Considering #ln(1/(e^2))=k# #color(white)("XXX")a=1/(e^2)=e^(-2)# so #color(white)("XXX")k=-2# If #ln (1/(e^2))=-2# then #color(white)("XXX")5ln(1/(e^2))=5xx(-2)=-10# 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 1482 views around the world You can reuse this answer Creative Commons License