DescriptionIntegration rectangle.svg	Numerical integration by Riemann sums. The function being used is ${\displaystyle f(x)=x^{2}+sin(2\pi x)}$.
Date	4 November 2010, 06:17 (UTC)
Source	Integration_rectangle.png
Author	Integration_rectangle.png: Emergie derivative work: Kpengboy (talk)

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Gnuplot Script Used

# SVG output
set terminal svg size 340 110
set output "Integration_rectangle.svg"
set samples 1000

# Configure border, axes, etc.
unset key
set xrange [-2:2]
set yrange [-1.5:4.75]
set border 3 lt 1 lc rgb "black"
set grid
set xtics autofreq 1
set ytics autofreq 2

# Define our function
f(x) = x**2 + sin(2*pi*x)

# Draw rectangles
set for [i = 0:15] object i+1 rect from -2+.25*i,0 to -2+.25*(i+1),f(-2+.25*(2*i+1)/2) fs empty border lt 3

# Plot
plot f(x)

Original upload log

This image is a derivative work of the following images:

• File:Integration_rectangle.png licensed with PD-self
  • 2008-02-16T19:43:51Z Emergie 340x110 (1003 Bytes) {{Information |Description=Numerical integration |Source=własna praca |Date= |Author= [[User:Emergie|Emergie]] |Permission= |other_versions= }} [[Category:Numerical analysis]]

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