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.
When storing utility macros, Excel users often elect to save them in the Personal Macro Workbook. The advantage is that the macros are available whenever Excel is running. The disadvantage is that if you switch or upgrade computers, you may forget to take a backup of the Personal Macro Workbook and thus lose your macros.