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How to get help in Windows - Microsoft Support
Here are a few different ways to find help for Windows. Search for help - Enter a question or keywords in the search box on the taskbar to find apps, files, settings, and get help from the web.
Office Help & Training
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向图表添加趋势线或移动平均线 - Microsoft 支持
重要: 从 Excel 版本 2005 开始,Excel 调整了计算图表中线性趋势线 R 2 值的方法,其中趋势线截距设置为零 (0)。 此调整会更正产生错误 R 2 值的计算,并将 R 2 计算与 LINEST 函数对齐。 因此,你可能会在以前的 Excel 版本中创建的图表上看到不同的 R 2 值。 有关详细信息,请参阅“图表中线性趋势线内部 ...
Applies To: Excel for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Excel for Microsoft 365 for Mac, PowerPoint for Microsoft 365 for Mac, Excel 2021, Outlook 2021, PowerPoint 2021, Excel 2021 for Mac, PowerPoint 2021 for Mac, Excel 2019, Outlook 2019, PowerPoint 2019, Excel 2019 for Mac, PowerPoint 2019 for Mac, Excel 2016, Outlook 2016, PowerPoint 2016
订阅和计费 | Xbox Support
获取与管理你的 Xbox 订阅、帐单问题等有关的详细信息。
强制措施处罚系统常见问题解答 | Xbox Support
查找有关 Xbox 强制措施处罚系统的一些问题的解答。
Help in Notepad - Microsoft Support
Get answers to common questions about Notepad. To open Notepad, select the Start button, enter Notepad, then select Notepad from the results. Here are answers to a few common questions about Notepad: