Question

hmm

Answer 1

\[\int\limits_{1}^{e}lnx/x ^{2}\]

Answer 2

o.0

Answer 3

\[ \int \frac{\ln x}{x^2} = \ln x\int
\frac{1}{x^2}dx - \int \frac{d}{dx}(\ln x) \left [ \int \frac{1}{x^2}dx \right ] dx\]

Answer 4

Integration by parts!!

Answer 5

still cant understand properly..='(

Answer 6

http://www.youtube.com/watch?v=ouYZiIh8Ctc

Answer 7

http://upload.wikimedia.org/wikipedia/en/math/5/5/a/55a72b066ae8631aa555be559c19ed7c.png
http://en.wikipedia.org/wiki/Integration_by_parts

Answer 8

Most of the time, if the integral in the form of ln, trig, exponent -> Integral by Parts
u = lnx, v = dx/ x^2