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Inverse of function
Hi, 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) = Â±sqrt(x) Why is that so? I had rather expected an error message. Regards -- Berthold Hamburger - Cellist/Spain http://www.artinso.com | http://www.astronomy.artinso.com | http://www.artemis.artinso.com Sent from my Android Galaxy tab with Kaiten Mail.