Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Solving Integral ∫ x/(4-x) dx

  1. Feb 15, 2005 #1
    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.
     
  2. jcsd
  3. Feb 15, 2005 #2

    arildno

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    Hint: Add to the numerator 0=4-4
     
  4. Feb 15, 2005 #3
    erm so you get
    ∫ 4/(4-x) dx - ∫1 dx ?
     
  5. Feb 15, 2005 #4

    arildno

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    That was the idea, yes.
     
  6. Feb 15, 2005 #5
    cheers!






    .......
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook