Whenever there is a negative under the radical sign, it comes out from underneath as i since the problem will contain a square root of -1. When simplifying these radical numbers in terms of i, follow the usual rules for simplifying radicals and treat the i with the rules for working with a variable. Examples:
The location of the Personal Macro Workbook is a little confusing, because older versions of Excel stored it in an XLSTART folder buried inside the Program Files folder. Even though you canât write any files to it, Excel 2007 and Excel 2010 also have XLSTART folders inside the Program Files directory.
In either case, the easy way to create PERSONAL.XLSB is not to muck around with the file system directly. Instead, just record a macro in Excel and, when youâre prompted to save it, choose Personal Macro Workbook from the Store Macro In drop-down menu on the Record Macro dialog box. Record yourself typing a few numbers and adding some formatting to them or something similar.