# Intergration homework

• June 14th 2006, 09:34 PM
Intergration homework
$\int \frac {1} {xlnx} dx$

I tried doing it with substitution, parts, but neither would work.
• June 14th 2006, 09:41 PM
malaygoel
Quote:

Originally Posted by tttcomrader
$\int \frac {1} {xlnx} dx$

I tried doing it with substitution, parts, but neither would work.

Substitute lnx =t.
You you will get the answer lnt + c which in equivalent to ln(lnx) + c. :)
• June 14th 2006, 09:58 PM
Ha, I was thinking about doing that, but I was thinking too hard. I keep thinking I could not seperate $\frac {1}{xlnx}$ into $\frac {1}{x}$ and $\frac {1}{lnx}$