PDA

View Full Version : Integration


briton
Feb15-05, 09:53 AM
quite simple but need some help:

∫ x/(4-x) dx.


when there's ∫f'(x)/f(x) you can use natural log but waht about this


full workings or some tips anyone?


Thanks.

arildno
Feb15-05, 09:57 AM
Hint: Add to the numerator 0=4-4

briton
Feb15-05, 10:01 AM
erm so you get
∫ 4/(4-x) dx - ∫1 dx ?

arildno
Feb15-05, 10:02 AM
That was the idea, yes.

briton
Feb15-05, 10:05 AM
cheers!






.......