Hi all,(adsbygoogle = window.adsbygoogle || []).push({});

This is a case of a book answer going against Wolfram's and my answer.

The problem is ∫^{∞}_{e}(ln(x)/x)dx

The book claims the answer is ∞.

I would think it is a case of ∞/∞ and use L'Hospital's Rule. Wolfram has the same solution.

*= lim_{a->∞}(1/x)/1

= 0

Which would be correct?

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Finding Where an Improper Integral Converges

**Physics Forums | Science Articles, Homework Help, Discussion**