Integral 1 to 2 of (x^3)lnxdx
What do we use as u? I tried lnx and x^3 and it didnt seem to work.
You should remember the acronym LIATE: you want to choose for u whatever comes first in the list Logarithmic, Inverse trigonometric, Algebraic, Trigonometric, Exponential. In this case you would choose .