- #1
drjohnsonn
- 11
- 1
Homework Statement
integrating x^3lnxdx
Homework Equations
The Attempt at a Solution
i let u = lnx
du/dx = 1/x
xdu = dx
x=e^u
substituting that, i got e^(4u)udu
then i let v = 4u
dv/du = 4
1/4du = dv
substituting that, i got 1/4integral e^v vdv
I haven't gone beyond that step yet. I was hoping someone more knowledgeable than I currently am could tell me if I am on the right track or let me know at what point I went wrong. Responses very much appreciated!
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