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Inverse of function

  • To: mathgroup at
  • Subject: [mg121395] Inverse of function
  • From: Berthold Hamburger <b-hamburger at>
  • Date: Tue, 13 Sep 2011 07:21:47 -0400 (EDT)
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I stumbled over a small riddle using mathematica 8. Asking for the 
inverse of the function f(x)= x^2, I receive the solution: f^(-1)(x) 
= ±sqrt(x)

Why is that so? I had rather expected an error message.


Berthold Hamburger - Cellist/Spain | | 
Sent from my Android Galaxy tab with Kaiten Mail.

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