Question

integrate lnxdx

Answer 1

TIP: You can do this one using integration by parts...

Answer 2

please help me out

Answer 3

ln(x) dx = x ln(x) - int (1/x)x dx = x ln(x) - int 1 dx

x ln(x) - x

Answer 4

Aww you beat me, but I'll type anyway

Answer 5

or ln(x) dx

set
u = ln(x), dv = dx
then we find
du = (1/x) dx, v = x

substitute

ln(x) dx = u dv

and use integration by parts

= uv - v du

substitute u=ln(x), v=x, and du=(1/x)dx

= ln(x) x - x (1/x) dx
= ln(x) x - dx
= ln(x) x - x + C
= x ln(x) - x + C.

Answer 6

Nevermind hahah

Answer 7

@taljaards
hey buddy we r not here to beat each other
it is pssible that he didn't get mine bt can get urs ...its not ur defeat n mine victory

Answer 8

Hahahah I know :)
Nope, my method was exactly the same as yours. Thanks for the quick reply, I'm sure the asker appreciates - I always do when asking a Q :)

Answer 9

i highly appreciate your help guys. thanks a lot