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File:Polynomialdeg3.svg

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Summary

Description

Polynomial of degree 3 with roots at 2, -1, and -4:

Date
Source Polynomialdeg3.png
Author N.Mori
Permission
(Reusing this file)
Public domain This work has been released into the public domain by its author, N.Mori. This applies worldwide.
In some countries this may not be legally possible; if so:
N.Mori grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
SVG development
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The SVG code is valid.
 
This plot was created with Matplotlib.
Source code
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Python code

Source code 
# Author: Ika, 2013-07-24
from pylab import *
import pylab as pl
import numpy as np

# Create a figure of size 8x6 points, 80 dots per inch
pl.figure(figsize=(8,8), dpi=80)

# Create a plot of the cubic function y=(x+4)(x+1)(x-2)/4
x = np.linspace(-5.0,4.0,256, endpoint=True)
y = (x+4)*(x+1)*(x-2)/4
pl.plot(x,y,color="magenta", linewidth=3.0, linestyle="-")

# Set labels
pl.xlim(-5,4)
pl.ylim(-4,7)

# Move the spines
ax = pl.gca()
ax.set_xlabel('x')
ax.set_ylabel('y')
ax.text(-5, 3, r'$y=\frac{1}{4}(x+4)(x+1)(x-2)$', fontsize=20)

# Set up the grid
ax.spines['right'].set_color('none')
ax.spines['top'].set_color('none')
ax.xaxis.set_ticks_position('bottom')
ax.spines['bottom'].set_position(('data',0))
ax.yaxis.set_ticks_position('left')
ax.spines['left'].set_position(('data',0))
ax.grid(color="grey",linestyle='--',linewidth=1)

# Save the figure to the output SVG file
plt.savefig("Cubic_Function_SVG.svg");

Captions

Mathematics

Items portrayed in this file

depicts

inception

6 January 2007

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current16:33, 2 January 2015Thumbnail for version as of 16:33, 2 January 2015400 × 400 (737 bytes)KrishnavedalaReverted to version as of 13:02, 30 August 2008: Cleaner rendering. text and graph not clear in the newly uploaded version.
08:33, 24 July 2013Thumbnail for version as of 08:33, 24 July 2013720 × 720 (34 KB)IkamusumeFan1. Redrew completely using Matplotlib; 2. Source code added; 3. Labels added.
13:02, 30 August 2008Thumbnail for version as of 13:02, 30 August 2008400 × 400 (737 bytes)N.Mori{{Information |Description= |Source= |Date= |Author= |Permission= |other_versions= }}
13:42, 6 January 2008Thumbnail for version as of 13:42, 6 January 2008400 × 400 (965 bytes)N.Mori{{Information| |Description=Polynomial of degree 3: <math>y=\frac{x^3}{4}+\frac{3x^2}{4}-\frac{3x}{2}-2=\frac{1}{4}(x+4)(x+1)(x-2)</math> |Source=Image:Polynomialdeg3.png |Date=2007-01-06 |Author=~~~ |Permission=See below |other_versions=None }} [[Cat

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