Dr. Weiguang Huang 124 Eastern Avenue, Kingsford, Sydney, NSW 2032, Australia Phone: (61 2) 96620516 http://showing.home.ml.org/ http://www.bigfoot.com/~VisualMath/ VisualMath@bigfoot.com, firstname.lastname@example.org
It is online symbolic math and computer algebra system, powered by SymbMath.
It can perform exact, numeric, symbolic and graphic computation, e.g. arbitrary-precision calculation, solve equation, plot data and user-defined functions, linear regression, symbolic differentation and integration. For calculation, users type expressions into the Input panel or double click on the Function panel, then click the Exact menu for exact computation, or click the Numeric menu for numeric computation, or click the Symbolic menu to run SymbMath engine. If symbolic integration fails when you click the Exact menu, you should click the Symbolic menu to run SymbMath engine to get more power. For evaluation of a function exp(x), first input exp(x) into the Input panel, then input the x value into the "x=" field, finally click the Numeric menu to get the function value. For solving an equation exp(x)=0, type the left side of the equation exp(x) into the y field, click on the "Solve" menu to get a solution at the "x=" field. For plotting functions, click on the "y", "Zoom In" or "Zoom Out" menu under the Graph menu. For plotting data, click the Import Data menu to import data file. You can fit any function to data by comparing data and function curves. Click the Linear Fit menu for linear regression. Find coordinates by clicking, input the initial value to the "x=" field by double-clicking, or zoom by drag, on graphics. You can copy-and-paste the text field from and to your document by right-button clicking on the text field to pop-up menu. For second way of copy-and-paste, first select the text, then key in Ctrl+C (i.e. press the Ctrl key and the C key at the same time), then point to where you want to paste, and finally key in Ctrl+V (i.e. press the Ctrl key and the V key at the same time). If you seen it online, it can run offline in your computer. Public version cannot read trig functions. You need a password to logon under the Help menu to activate trig functions. For security reason, Open and Save files, and Print work only when it runs as local application. Its SymbMath engine works only when it runs in Microsoft Window. Please read SymbMath manual SymbMath.doc. It is all of Java applet, Java application and Window application. Run VisualMath.html as Java applet, run VisualMath.bat as Java application, or run VisualMath.exe as Window email@example.com