Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    Name or NavList Code:
    Email:
       
    Reply
    Re: Index error vs. index correction
    From: Robin Stuart
    Date: 2020 Mar 22, 06:49 -0700

    Dave Walden attached an extract from the Handbook of Mathematical Functions by Abramowitz and Stegun which states

    (1) If x0 is an approximation to the true value x, then

    3.5.1 (a) the absolute error of x0 is Δx = x0 - x, x - x0 is the correction to x.

    This looks like it might be a typo to me. I would have written "x - x0 is the correction to x0" since you have to add (x - x0) to the approximate value, x0, to get the true value, x.

    Robin Stuart

       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a NavList ID Code

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

    Retrieve a NavList ID Code

    Enter the email address associated with your NavList messages. Your NavList code will be emailed to you immediately.
    Email:

    Email Settings

    NavList ID Code:

    Custom Index

    Subject:
    Author:
    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site