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For what values is the expression always real?

  1. May 8, 2015 #1
    1. The problem statement, all variables and given/known data
    I have the expression ##a_2 \overline{\beta} + a_3 \beta## involving complex variables, where ##|\beta| \le 1##. I was wondering, is it possible to determine for what ##a_2## and ##a_3## the expression is always real, for every ##\beta## satisfying ##|\beta| \le 1##; or is there insufficient information?

    2. Relevant equations


    3. The attempt at a solution
     
  2. jcsd
  3. May 8, 2015 #2

    Mark44

    Staff: Mentor

    An attempt is required. Please start a new thread that includes what you have tried.
    Thread closed.
     
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