J. C. Daly
Visual Basic for Applications (VBA) is integrated into Excel. It is a computer language similar to C, MATLAB, or FORTRAN.
In excel click on the Microsoft Office Button, , in the upper left corner.
Then check Excel Options.
The window shown below comes up.
In the Popular category, under Top options for working with Excel, select,
Show Developer tab in the Ribbon, as shown above. Click OK.
On the Developer tab, in the Code group, click Visual Basic.
In the Visual Basic Editor, on the Insert menu, click Module
In the code window, type the macro code. For example, the code defining a new function F(x) shown below was entered.
Save the workbook.
F(x) is now a function that can be evaluated by Excel, as shown below. Cell C5 contains e-x2
where x = 1. That is C5 contains, e-1 = 0.367879. More complex code is possible.