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!

Puzzling Equation

  1. Jan 28, 2010 #1
    I am reading an article that shows this equation

    (eqn 1) f(x) = f(x1)*f(x-x1) / [ (cot(x1) + cot(x-x1) ]

    an it continue that the solution to it is

    (eqn 2) f(x) = 1 / (sin(x) ).

    I admit that it is indeed easy to show that eqn 2 does fit to eqn 1 but I don't really have idea how to get eqn 2 out of eqn 1. Will anybody share their idea how to do this stuff? This puzzles me because it seems easy but I just dont know how to start it.
     
  2. jcsd
  3. Jan 28, 2010 #2
    Can you check and make sure you wrote this down correctly.

    Also, I assume x1 means [itex]x_1[/itex].

    Also, [itex]x_1[/itex] can be anything I want?

    Every detail to a question is important. There is no such thing as text talk in mathematics. ;)
     
    Last edited by a moderator: Jan 29, 2010
  4. Jan 28, 2010 #3
    Im sorry for the incomplete information.

    0< x_1 < x is the additional restriction.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook