Plot 2d and 3d Graphs and Functions with GraphCalc

GraphCalc (Windows) is a great graphing tool that I had used along with CaR before I discovered GeoGebra.  It is capable of plotting 2-d graphs (up to 10 equations simultaneously) and 3d graphs (up to 6 equations simultaneously).  Unlike other graphing calculators, Graphcalc has numerous functionalities:  it allows adjustment of graph range and resolution, modification of tick marks, and graph and background color customization.  In addition, it also contains four rending modes and two shading models for a more flexible graph appearance.

3d graph plotted in GraphCalc

I recently checked GraphCalc’s latest version, and the new addition is that it allows finding the intersection of two functions as well as the drawing of tangent lines. Graphcalc also supports scripting  (haven’t tried this yet), particularly if and while operators.

And above all, GraphCalc is free.

8 Free Online Math Graphing Tools

If you construct graphs a lot, you may want to check out some great online graphing tools listed below.

1.) Desmos Calculator and Grapher is an excellent online graphing tool that can plot points, graph parabolas, conic sections, and even Fourier expansions.  Aside from being a grapher, it is also an online calculator.

2.) Graph.tk is one of the easiest to use online grapher. It can graph a wide variety of functions including derivatives, absolute value functions, and polar graphs.

3.) Graph Sketch. Graph Sketch is an online graphing software created by Andy Schmitz.  It is capable of graphing standard and parametric functions.  Graph results can either be downloaded or save as page that you can linked to.

4.) Rational Function Plotter. Rational function plotter allows you to plot rational functions. The applet allows you to specify the domain, range, and other properties of graphs such as thickness, gridlines, tick marks, etc.

5.) Function Grapher and Calculator. Function Grapher and Calculator is another tool for graphing functions. Unlike other sites, it is easier to zoom in Equation Grapher.

6.) Wolfram Alpha.  Wolfram Alpha not only plot graphs but also computes for the critical points of graphs such as its local maximum, minimum, roots, etc. Wolfram Alpha can do a lot more than those.  To know more about it,  click here.

7.) GeoGebra. GeoGebra has an online version which can be used for Graphing. called the Applet Start.  Its basically the identical version of GeoGebra.

8.) Holt Online Graphing Calculator.  The Holt graphing calculator can graph up to four functions at a time. Aside from the graph, HOGC also provides a table of integral values.

Addition:

9. Fooplot. This is another good function plotter. You can plot up to four functions. The output can saved in eps, png, pdf, and svg format.

If you know any good online graphing software, please inform me so we can include it in the list.

Graph Online with Graph.tk

If you want to construct graphs online, you may want to check out Graph.tk. What is attractive about  Graph.tk is that it’s very easy and fast to use.

All you have to do is to click the “+” sign located at the upper right of your window and type the equation. You can also show/hide the graph using the check box at the left of each equation and delete the graph using the “x” button at the right of the equation.

Graph.tk is capable of plotting Cartiesian and polar graphs. It is also capable of graphing inequalities.

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