1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

1st O.D.E, homogenous but with constants

  1. Sep 11, 2007 #1
    1. The problem statement, all variables and given/known data

    solve: y'=(x+y-1)/(x-y-2) i.e

    2. Relevant equations



    3. The attempt at a solution

    let y=vx
    thus
    y'=v'x+v

    by substitution:

    v'x+v=(1+y/x-1/x)/(1-y/x-2/x)=(1+v-1/x)/(1-v-2/x)

    v'x=(1-1/x+v^2+2v/x)/(1-v-2/x)

    still cant seperate the variables....any ideas?

    thanksx
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Sep 11, 2007 #2
    thanks dick does work!
     
  4. Sep 11, 2007 #3

    Dick

    User Avatar
    Science Advisor
    Homework Helper

    Uh, are you sure? I tried it again after I posted, and realized I'd made a mistake and deleted the post so it wouldn't confuse anyone. Just double check, ok?
     
    Last edited: Sep 11, 2007
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?