Build a custom Excel function library in minutes! Learn how to use VBA, create a personal macro workbook, and design a custom ribbon tab.

SERIESSUM function returns the sum of a power series based on the formula. Learn how to use the SERIESSUM function in Excel.

The IMSUB function's purpose is to return the difference between two complex numbers. Learn how to use the Excel IMSUB formula.

To use the Function Arguments wizard to build a VLOOKUP formula in Microsoft Excel, use these steps: Open Excel.