Last term, in my diff eq class during an exam and my professor made a mistake on one of the problems :rolleyes:. Anyway, the problem he gave us was pretty difficult to integrate.
Integrate with respect to x: e^x/x
Substitution and by parts didn't seem to work. The closest I got was to separate the expression as
(1/x)(sum from n=1 to infinity of x^n/n!), I believe that is the correct expansion of e^x, I may be wrong.
I'm just wondering if there is another approach to this problem.