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!

FUnction of a square

  1. Dec 12, 2008 #1
    1. The problem statement, all variables and given/known data

    Find a function of y whose square plus the square of its derivative is 1.
    i.e. (y^2)+(y')^2=1 and carry out your ideas.

    2. Relevant equations

    3. The attempt at a solution

    Can anyone just help me out with this one. Kinda confused by the questioning. Just point me in the right direction.
  2. jcsd
  3. Dec 12, 2008 #2
    Think trig identities...
  4. Dec 12, 2008 #3
    I still dont see it. How does the derivative factor into it?
  5. Dec 12, 2008 #4


    User Avatar
    Science Advisor
    Homework Helper

    Dr. Lady is suggesting you simply guess the answer.
    Otherwise you have y'=+/-sqrt(1-y^2). You can try to integrate that.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: FUnction of a square