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Inverse Hyperbolic Tangent

  1. Feb 22, 2014 #1
    So, I'm doing a problem where I take arctanh to a limit, and I was wondering if the arctanh function goes to infinity if the argument inside of the function goes to infinity when passing through the limit.
     
  2. jcsd
  3. Feb 22, 2014 #2

    mathman

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    Is the argument real or complex? For real numbers, |tanh| ≤ 1. If the argument for arctanh is not in the domain [-1,1], then arctanh must be complex.
     
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