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Signal Representation by Orthogonal Sets problem

  1. Dec 16, 2011 #1
    1. The problem statement, all variables and given/known data

    Hello, everyone

    This is a practice problem from BP Lathi's Signal Processing and Linear Systems book, exercise E3.2 for those that have the book.

    http://img818.imageshack.us/img818/2838/imag0736i.jpg [Broken]

    Here is the exercise E3.2

    http://img269.imageshack.us/img269/7095/imag0734o.jpg [Broken]

    2. Relevant equations

    http://img710.imageshack.us/img710/8167/imag0737copy.jpg [Broken]

    The formula for "c"

    http://img4.imageshack.us/img4/827/imag0738copy.jpg [Broken]

    3. The attempt at a solution

    Here is my trial

    http://img836.imageshack.us/img836/552/imag0735m.jpg [Broken]

    I can't get the given answer. As far as I know, I there are no math errors in my computation.

    I am sure its simple stuff. But I really like to know what am I doing wrong here.

    Thanks in advance.
    Last edited by a moderator: May 5, 2017
  2. jcsd
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