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Homework Help: Find the vertical and horizontal asymptotes.

  1. Nov 28, 2009 #1
    1. The problem statement, all variables and given/known data

    Find the vertical and horizontal asymptotes.

    2. Relevant equations

    f(x) = earctan x

    3. The attempt at a solution

    Honestly, I am pretty stumped on this problem. I have graphed it on my calculator and messed around a bit, it seems that the horizontal asymptotes are around y = 0.20788 and y = 4.81048. Or something along those lines.

    Any help would be greatly appreciated.

  2. jcsd
  3. Nov 28, 2009 #2


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    Science Advisor
    Homework Helper

    You'll need to figure out the limit of arctan(x) as x->infinity and (-infinity). Put the calculator away and remember the definition of arctan.
  4. Nov 28, 2009 #3
    Oh, ha ha. Wow, how embarrassing.

    It's just epi/2 and e-pi/2.

    Thanks, heh heh.

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