Services & Resources / Wolfram Forums / MathGroup Archive
-----

MathGroup Archive 2011

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Inverse function

  • To: mathgroup at smc.vnet.net
  • Subject: [mg115579] Re: Inverse function
  • From: Murray Eisenberg <murray at math.umass.edu>
  • Date: Sat, 15 Jan 2011 04:45:40 -0500 (EST)

The function f[x_] := x^2 is not one-to-one, even on just the real 
numbers; and on the complex numbers it is exactly two-to-one (except at 
x = 0).  So it has no inverse function (as a real-valued function of a 
real variable).

So what are you really trying to ask?

On 1/14/2011 6:16 AM, Arnold wrote:
> Function y=x^2 is given. Give, please, a code in WM-7 with which help it is possible to receive function, return the given. That is, x=g (y).
> Thanks.
>

-- 
Murray Eisenberg                     murray at math.umass.edu
Mathematics & Statistics Dept.
Lederle Graduate Research Tower      phone 413 549-1020 (H)
University of Massachusetts                413 545-2859 (W)
710 North Pleasant Street            fax   413 545-1801
Amherst, MA 01003-9305


  • Prev by Date: Re: Interpolation of a tabulated function
  • Next by Date: Re: fill in harberger triangle
  • Previous by thread: Re: Inverse function
  • Next by thread: Re: Inverse function