lasers Messages 1 Reaction score 0 Thread starter May 17, 2012 #1 ∫e^(1/x) / x^3 dx ? This has to be simple it's an improper integral from -1 to 0 How to solve?
arildno Science Advisor Homework Helper Gold Member Dearly Missed Messages 10,165 Reaction score 138 May 17, 2012 #2 Use integration by parts.
Bohrok Messages 867 Reaction score 0 May 17, 2012 #3 You might want to try the substitution u =1/x first, then parts.