Originally Posted by
twostep08 the question is (integral) x log x dx
i did integration by parts, and got it right with one exceptino....for the first term, i got 1/2 x^2 log x
however, in the answers it says the x after the log should be in absolute value. why is this (or how do i show this in my work), i set my u to "log x" so i dont understand why it would change....
any help as always is appreciated!
would it be sufficient if i just threw the absolute value in the first step.. is this understood to be true without explanation?