1. Limited time only! Sign up for a free 30min personal 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!

Its kinda difficult

  1. Apr 24, 2005 #1
    hey i need help with this its a simul eqn ,here it is ,
    x+y=5,x^x+y^y=31.any help will be appreciated
     
  2. jcsd
  3. Apr 24, 2005 #2
    Why do I feel I have seen this before? :rolleyes:

    (2,3)

    The Bob (2004 ©)
     
  4. Apr 27, 2005 #3
    can i get a solution plssssssssssssssss
     
  5. Apr 27, 2005 #4

    HallsofIvy

    User Avatar
    Staff Emeritus
    Science Advisor

    This is, after all, the second time you have posted this question: all I can do is give the same answer I did before: from x+ y= 5, y= 5- x so the second equation can be written xx+ (5-x)5-x= 31. That equation cannot be solved (for arbitrary right hand side) by any elementary functions. It is possible that such an equation can be solved by the "Lambert W function".

    However, as was explained the last time this was posted, in this particular problem,
    33+ 22= 31 so x= 3, y= 2 and x= 2, y= 3 are solutions. They are probably the only solutions. It shouldn't be too difficult to check that.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Its kinda difficult
  1. Silly kinda question. (Replies: 3)

  2. Counting, kinda (Replies: 29)

  3. Difficult Equation (Replies: 6)

  4. Difficult series (Replies: 1)

Loading...