Red_CCF Messages 530 Reaction score 0 Thread starter May 27, 2010 #1 If I take e^ln|x|, do I get x or |x|?
Mark44 Mentor Insights Author Messages 38,144 Reaction score 10,740 May 27, 2010 #2 |x| For example, if x = -1, ln(x) is undefined, but ln|x| = 0, and e^ln|x| = e^0 = 1 = |-1|
Redbelly98 Staff Emeritus Science Advisor Homework Helper Insights Author Messages 12,179 Reaction score 186 May 27, 2010 #3 e(any real number) is always positive.