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: All of the functions that achieve defined

  1. Apr 9, 2008 #1
    If you allowed they helped me

    All of the functions that achieve defined

    if f A defined function in R X R

    f(x) + f ( y2 ) = f ( x2 +y)
  2. jcsd
  3. Apr 10, 2008 #2
    No Answer
  4. Apr 10, 2008 #3
    Is your question to find all functions [itex]f:\mathbb{R}\to\mathbb{R}[/itex] such that [itex]f(x)+f(y^2)=f(x^2+y)\quad\forall x,y \in \mathbb{R}[/itex]?

    If you want us to help you, show some effort. What have you tried so far?
    Last edited: Apr 10, 2008
  5. Apr 10, 2008 #4
    Yes O my friend what I want
    And I thank you for your cooperation with me
  6. Apr 10, 2008 #5
    Is the function defined on R or on RxR...?

    Take some special values for x and y, like x=0, or y=0 or x=y and see where it takes you.
  7. Apr 10, 2008 #6
    With the use of the drawing programs they came to y =x
    But the wanted is the solution compulsorily
    I believe by Al Mtslslat
    The question I do not know how I deal with it a new for me .
  8. Apr 10, 2008 #7
    Sorry, I do not understand what you are saying. I suggest you try and find someone to help you who speaks your language.
  9. Apr 10, 2008 #8
    I mean the solution by the Khawarizmi way

    And thank you to your aid
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook