Question

What is the integral of ln[x] ?! How do you calculate it . . ?!

Answer 1

using by parts

Answer 2

What wasiqss said. :D

Answer 3

Think about it this way. The derivative of ln(x) is easily evaluable. One can cancel out this derivative by the antiderivative of dx. Hence, by parts.

Answer 4

Thank you all , quite helpful indeed ... ;)