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KmPlot is a mathematical function plotter.

KmPlot is part of the KDE Education Project. It has built in a powerful parser. High precision printouts with correct metric scale are very useful as worksheets in math and science lessons.
KmPlot can plot different functions simultaneously and combine their function terms to build new functions. It supports functions with parameters. You can change the parameters by moving a slider and see how the plot will change.
Some trigonometric functions
Features
 powerful mathematical parser
 precise metric printing
 different plot types:
 Cartesian
 parametric
 polar
 implicit
 differential
 highly configurable visual settings (plot line, axes, grid)
 export to bitmap format (BMP and PNG) and scalable vector graphics (SVG)
 save/load complete session in readable xml format
 trace mode: cross hair following plot, coordinates shown in the status bar
 support zooming
 ability to draw the 1st and 2nd derivative and the integral of a plot function
 support user defined constants and parameter values
 various tools for plot functions:
 find minimum/maximum point
 get yvalue and draw the area between the function and the yaxis
Example Plots
 x(t)=0.5(t2sin t)
 y(t)=2(12cos t)

 rf(x)=x

 x(t)=5sin(3t)
 y(t)=3cos(5t)

 f(x)=3sin x
 g(x)=5cos(2xpi/2)
 h(x)=f(x)+g(x)

Documentation
KmPlot Handbook
Content is available under
Creative Commons License SA 4.0 unless otherwise noted.