Results 1 to 1 of 1

Math Help - upper and lower limits for density function

  1. #1
    Newbie
    Joined
    Nov 2009
    Posts
    3

    upper and lower limits for density function

    I have been trying to figure out how to get the upper and lower limits to this problem? Would it be through u substitution?

    Let X and Y be random variables. The density function of X is

    f(x) = 24x^2, for 0<x<1/2,
    0, otherwise

    The conditional density of Y, given X=x, is

    g(y) = y/(2x^2), for 0<y<2x,
    0, otherwise

    What is the form of the marginal density function of Y where it is nonzero?

    The answer is, ky(1-y) for 0<y<1, but not exactly sure on how it was derived.

    Thanks for the help.
    Last edited by Molecule390; November 24th 2009 at 01:13 PM. Reason: correcting error
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Dirichlet function upper and lower sum
    Posted in the Differential Geometry Forum
    Replies: 2
    Last Post: July 26th 2011, 12:01 PM
  2. X-bar charts -- Upper/lower control limits
    Posted in the Advanced Statistics Forum
    Replies: 0
    Last Post: December 6th 2009, 03:43 AM
  3. Replies: 1
    Last Post: June 5th 2009, 06:27 AM
  4. Upper and lower limits
    Posted in the Calculus Forum
    Replies: 1
    Last Post: October 19th 2008, 04:58 PM
  5. Riemann Sums Upper and Lower limits
    Posted in the Calculus Forum
    Replies: 6
    Last Post: February 7th 2008, 05:40 PM

Search Tags


/mathhelpforum @mathhelpforum