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!

Any one solve this eq. please ?

  1. Aug 20, 2008 #1
    any one solve this eq. please ????

    hi all
    any one solve for me this eq.

    y(2xy+ex)dx-exdy=0 y(0)=2
     
    Last edited: Aug 20, 2008
  2. jcsd
  3. Aug 20, 2008 #2

    tiny-tim

    User Avatar
    Science Advisor
    Homework Helper

    Welcome to PF!

    Hi abuder3! Welcome to PF! :smile:
    ah … that's not the way this forum works. :wink:

    First show us what work you've done …

    which category do you think this comes in?

    have you seen anything similar?

    what have you tried? :smile:
     
  4. Aug 20, 2008 #3
    Re: any one solve this eq. please ????

    :smile::smile::smile::smile:
     
  5. Aug 20, 2008 #4
    Re: any one solve this eq. please ????

    Classic.
     
  6. Aug 20, 2008 #5

    Defennder

    User Avatar
    Homework Helper

    Re: any one solve this eq. please ????

    Write it out in the form dy/dx + ... = ..., rearrange the terms and you should be able to get a recognisable DE.
     
  7. Aug 21, 2008 #6
    Re: any one solve this eq. please ????

    I cant get any solutions
     
  8. Aug 21, 2008 #7
    Re: any one solve this eq. please ????

    please write the solution
     
  9. Aug 21, 2008 #8
    Re: any one solve this eq. please ????

    If you click on the "Go advanced" button at the bottom of your reply box it will present you with a number of options to add extra content into your replies.

    There is a "[tex]\sum[/tex]" button which you can click on to add mathematics in LaTeX format. Its very useful when trying to communicate ideas to other as ASCII is insufficient for communicating mathematics.

    Good luck
    :cool:
     
  10. Aug 21, 2008 #9

    tiny-tim

    User Avatar
    Science Advisor
    Homework Helper

    Show us what work you've done

    which category do you think this comes in?

    have you seen anything similar?

    what have you tried? :smile:
     
  11. Aug 21, 2008 #10
    Re: any one solve this eq. please ????

    thanks!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
     
  12. Aug 21, 2008 #11
    Re: any one solve this eq. please ????

    Hi there!

    It's an interesting DE! To be honest I don't have any idea how to solve it too :(

    [tex]y(2xy+e^x)dx=e^xdy[/tex]

    [tex]\frac{dy}{dx}=\frac{2xy^2+ye^x}{e^x}[/tex]

    [tex]\frac{dy}{dx}-y=\frac{2xy^2}{e^x}[/tex]

    Now, as I stare at it I see it's not linear and it's not homogeneous. It also cannot be solved by separation of variables.., quadrature does not work here. The 2nd power of y reminds me of the Bernoulli equation.. hmmmmm
     
  13. Aug 23, 2008 #12
    Re: any one solve this eq. please ????

    The latter is correct, consider Bernoulli....
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Any one solve this eq. please ?
  1. Please solve this one (Replies: 3)

  2. Diff. Eq. Solve (Replies: 11)

Loading...