Checked content

File:LogTay.svg

Summary

Description The log(x+1) and Taylor approximations of degree 4, 7, 11, 16. Note that, for x > 1, the successive approximations grow worse.
Date 2008-03-04
Source Own work
Author Niles
Permission
( Reusing this file)

Public domain

Instructions

Created with gnuplot using the following code

set terminal svg \
        size 1000 1000 \
        fixed enhanced \
        fname 'Times New Roman'  \
        fsize 32

set output "LogTay.svg"

set samples 2000

set autoscale fix
set xrange [-1.5:1.5]
set yrange [-4:2]

set grid
set xtics .5
set ytics .5
set xzeroaxis linewidth 2.5
set yzeroaxis linewidth 2.5

set key -0.1,1.75
        
unset border
plot x - x**2/2 + x**3/3 - x**4/4 lw 2 title "T_4", \
        x - x**2/2 + x**3/3 - x**4/4 + x**5/5 - x**6/6 + x**7/7 lw 2 title "T_7", \
        x - x**2/2 + x**3/3 - x**4/4 + x**5/5 - x**6/6 + x**7/7 -x**8/8 + \
          x**9/9 - x**10/10 + x**11/11 lw 2 title "T_{11}", \
        x - x**2/2 + x**3/3 - x**4/4 + x**5/5 - x**6/6 + x**7/7 -x**8/8 + \
          x**9/9 - x**10/10 + x**11/11 - x**12/12 + x**13/13-x**14/14 + \
          x**15/15 - x**16/16 lw 2 title "T_{16}", \
        log(1+x) lw 3 lt 7

Licensing

Public domain I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
In some countries this may not be legally possible; if so:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

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