Hi,
I have a problem with this integration problem.If I have to integrate log_e(j^3) dj what method cna I use?..
Thanks,
NS
note that you have $\displaystyle 3 \int \ln j ~dj$
there are tons of ways to do this integral and they have been done on this site several times. you can do a search if you are so inclined. but i will tell you the conventional way to proceed. use integration by parts with $\displaystyle u = \ln j$ and $\displaystyle dv = dx$
recall the formula: $\displaystyle \int u~dv = uv - \int v~du$