How do I find the limit as x approaches negative infinity of lnx? Precalculus Limits Limits Involving Infinity 1 Answer Amory W. Sep 13, 2014 The answer is undefined. The domain of lnx is x>=0, so -oo is not in the domain. Answer link Related questions How do I find the limit as x approaches infinity of (1.001)^x? How do I find the limit as x approaches infinity of x^7/(7x)? How do I find the limit as x approaches infinity of xsin(1/x)? How do I find the limit as x approaches infinity of the square root function? How do I find the limit as x approaches infinity of tanx? What is the limit as x approaches infinity of (x^2-4)/(2x-4x^2)? What is the limit as x approaches infinity of 1/x? What is the limit as x approaches infinity of x? What is the limit as x approaches infinity of cosx? What is the limit as x approaches infinity of lnx? See all questions in Limits Involving Infinity Impact of this question 17796 views around the world You can reuse this answer Creative Commons License