Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
1996
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 1996

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

Search the Archive

Re: Inverse of Error Function

  • To: mathgroup at smc.vnet.net
  • Subject: [mg5266] Re: Inverse of Error Function
  • From: "David B. Wagner" <dbwagner at princon.com>
  • Date: Mon, 18 Nov 1996 02:30:07 -0500
  • Organization: Principia Consulting
  • Sender: owner-wri-mathgroup at wolfram.com

Gustav Louw wrote:
> 
> I'm trying to find the inverse of the Error function in MMA.
> 
> I tried using InverseFunction, like this...
> 
>  InverseFunction[Erf[z]]
> 
>               (-1)
> Out[1]= Erf[z]
> 
> But when I tried to find some numerical values i got this ...
> 
> In[2]:= % /. z->1 //N
> 
>                 (-1)
> Out[2]= 0.842701

The function InverseErf is defined in the 
Statistics`InverseStatisticalFunctions` package in version 2.2.
This package has disappear in version 3.0; the functions now seem
to be built-in.



  • Prev by Date: Arnold's Cat Map
  • Next by Date: Orbital propagators
  • Previous by thread: Re: Inverse of Error Function
  • Next by thread: Re: Speed of dot product in Mathematica