SERIESSUM function - Microsoft Support
The SERIESSUM function syntax has the following arguments: X Required. The input value to the power series. N Required. The initial power to which you want to raise x. M Required. The step by which to increase n for each term in the series. Coefficients Required.
Save your files - Microsoft Support
Save your file in a different file format. Select File, then Save As. Under Save As, select Browse, pick a path and file folder, then name the file. In the Save as type list, pick the file format you want, then select Save.
Open files from the File menu - Microsoft Support
Search for your file. If you have a document on your computer, but you're not sure exactly what folder it's saved in, you can find it as long as you know at least part of the name or a bit of text that is in the document. Click the Browse button at the bottom of the places list on the left.
Available number formats in Excel - Microsoft Support
To see all available number formats, select the Dialog Box Launcher next to Number on the Home tab in the Number group. The default number format that Excel applies when you type a number. For the most part, numbers that are formatted with …