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Homework Help: Convergence question

  1. Oct 13, 2009 #1


    User Avatar

    [tex]z_n=\rho_ne^{i\theta_n}\\[/tex] is a series of complex numbers which differs 0 for which


    A.does [tex]\sum z_n\\[/tex] converge

    B.does [tex]\sum |z_n|\\[/tex] converge
  2. jcsd
  3. Oct 13, 2009 #2


    Staff: Mentor

    What have you tried? Do you know any theorems for determining whether an infinite series converges?
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